Cheap vs Expensive Protein Powder: Is Premium Whey Worth It?
Premium whey such as Optimum Nutrition Gold Standard costs about twice as much per 25g of protein as a good budget whey, with no evidence it builds more muscle at the same daily protein intake. For most people the budget tub is the better buy, and the few exceptions, such as drug testing, are below.
Kevin, founder of WheyWise
75p per 25g of protein, one-off
Protein Works
Whey Protein 360 Gold
1.2kg bag
Buy Whey Protein 360 Gold →Direct from Protein Works
10% off with code WHEYWISE
Prozis
Supreme Whey Protein
907g bag
Buy Supreme Whey Protein →Direct from Prozis
£1.06 per 25g of protein in the 5kg bag
Bulk
Pure Whey Protein
1kg bag
Buy Pure Whey Protein →Live price across UK retailersSee all UK alternatives in the live comparison table →Quick answer
Cheap whey is just as good for building muscle once your daily protein is the same, so for most people the premium tub is not worth it. Protein Works Whey Protein 360 Gold makes the case: 67g of protein per 100g, not far off Optimum Nutrition Gold Standard's 76g, at 75p per 25g of protein in the 4.8kg bag at the one-off price, against £1.42 for Gold Standard in the 2.27kg tub on Amazon UK. The ISSN puts the target at 1.4 to 2.0g of protein per kg of bodyweight a day, and no study we found shows a premium brand building more muscle at the same intake. The one extra worth paying for is certification if you are drug tested: Applied Nutrition Critical Whey in an Informed Sport flavour costs £1.14 per 25g of protein, still less than Gold Standard.
Prices are one-off retailer prices, without subscriptions or codes, that WheyWise checked on 22 to 24 October 2026.
How much more does expensive whey cost per 25g of protein?
Optimum Nutrition Gold Standard costs £1.42 per 25g of protein in the 2.27kg tub on Amazon UK, against 75p for Protein Works Whey Protein 360 Gold in the 4.8kg bag: 1.9 times as much. Big brands sit in between, such as Myprotein Impact Whey at £1.18 in the 2.7kg bag. Protein density differs between powders, so the fair comparison is cost per 25g of protein, not price per kilo.
| Whey | Protein per 100g | Pack and one-off price | Cost per 25g of protein |
|---|---|---|---|
| NutriSport 90+ (whey, casein, soy and rice blend) | 76g | 5kg, £63.99 (Amazon UK) | 42p |
| Bulk Basic Whey (whey and soy blend) | 56g | 2.5kg, £35.99 (Amazon UK) | 64p |
| Protein Works Whey Protein 360 Black | 59g | 4.8kg, £80.49 (Protein Works) | 71p |
| Protein Works Whey Protein 360 Gold | 67g | 4.8kg, £95.99 (Protein Works) | 75p |
| Bulk Pure Whey Protein | 71g | 5kg, £149.99 (Amazon UK) | £1.06 |
| Applied Nutrition Critical Whey (Vanilla Ice Cream) | 72g | 825g, £27.00 (Amazon UK) | £1.14 |
| Myprotein Impact Whey | 72g | 2.7kg, £91.49 (Myprotein) | £1.18 |
| Optimum Nutrition Gold Standard 100% Whey | 76g | 4.54kg, £170 (Amazon UK) | £1.23 |
| Prozis Supreme Whey Protein | 80g | 907g, £39.26 (Prozis) | £1.35, or £1.22 with WHEYWISE |
| Optimum Nutrition Gold Standard 100% Whey | 76g | 2.27kg, £97.98 (Amazon UK) | £1.42 |
One-off prices on 22 to 24 October 2026 (Prozis 14 October), from WheyWise's price checks and Protein Works' own product pages. Protein Works' OnTap subscription is about 15% cheaper, and our product cards may show that price. The Prozis code price is worked out from the scraped price.
Budget price, mid-tier protein
Protein Works Whey Protein 360 Gold
1.2kg bag
Our pick for most buyers: about half the cost per gram of protein of the premium benchmark. The card may show the OnTap subscription price.
or compare all UK prices →Budget price, mid-tier protein
Protein Works Whey Protein 360 Gold
1.2kg bagPros
- + 75p per 25g of protein in the 4.8kg bag at the one-off price
- + 67g of protein per 100g, more than the cheapest budget lines
- + Code WW12 takes 12% off at Protein Works
Cons
- – A blend: whey, milk protein and soya protein, not 100% whey
- – Less protein per 100g than Gold Standard's 76g
●Nutrition per scoop · 20.4g protein in 30g▼
Protein makes up 68%
of this 30g scoop · 113 kcal total
Which whey protein brands are worth paying extra for?
Pay extra for a brand only when it buys something you need: 100% whey instead of a soy blend, Informed Sport certification, or a flavour you will actually finish. Paying for the name alone buys no extra muscle. Here is our verdict on each price tier, on one-off prices per 25g of protein.
| Tier | Examples and cost per 25g of protein | Verdict |
|---|---|---|
| Budget blends | NutriSport 90+ 42p (5kg), Bulk Basic Whey 64p (2.5kg) | Worth it if you are happy with soy in the mix. Bulk Basic has 56g of protein per 100g, so the scoop is bigger. |
| Value brand-site whey | Protein Works Whey Protein 360 Black 71p, 360 Gold 75p (4.8kg) | Best balance of price and protein density, though both include soya protein. |
| Big-brand 100% whey | Bulk Pure Whey £1.06 (5kg), Myprotein Impact Whey £1.18 (2.7kg) | Worth the step up if you want straight whey concentrate. Wait for a sale code at Myprotein. |
| Certified | Applied Nutrition Critical Whey, Informed Sport flavours, £1.14 (825g) | Worth it if you are drug tested. The only premium that changes your risk. |
| Premium | Optimum Nutrition Gold Standard £1.23 to £1.42, Prozis Supreme Whey £1.35 | Worth it only for taste or habit. Buy the biggest tub to cut the cost. |
Should you pay more for a big-name whey or buy a budget brand for muscle gain?
Buy the budget brand, as long as its label shows a decent amount of protein per 100g. Muscle gain depends on how much protein you eat across the day: the International Society of Sports Nutrition (ISSN position stand on protein and exercise, 2017) puts the target for most people who exercise at 1.4 to 2.0g per kg of bodyweight a day (Jäger and others, 2017). We found no study comparing named whey brands head to head, and a whey protein from a budget brand supplies the same essential amino acids as one from a premium brand.
What you should check is the label, not the logo. A powder with 56g of protein per 100g is not worse protein, but it needs a bigger scoop. Our guide to the best protein powder for muscle gain covers the amounts.
Which premium whey is actually worth the extra money?
Optimum Nutrition Gold Standard 100% Whey is the premium whey most worth paying for, if you want one, and the 4.54kg tub cuts its cost to £1.23 per 25g of protein from £1.42 in the 2.27kg tub. WheyWise's founder rates its Double Rich Chocolate as a go-to: it mixes well, tastes of real chocolate, and is not too thick with water. You are paying for that consistency, a whey isolate, concentrate and peptide formula, and the brand, not for extra muscle.
The premium benchmark
Optimum Nutrition Gold Standard 100% Whey Protein
907g bag
Optimum Nutrition Gold Standard delivers 24g protein per scoop and holds 4.6 stars across 55,000+ Amazon UK reviews. The default benchmark whey for buyers who want proven consistency over the lowest cost.
Buy Gold Standard 100% Whey Protein →See the price on AmazonThe premium benchmark
Pros
- + 24g protein per scoop blended WPI WPC and hydrolysate
- + Most reviewed whey protein on Amazon UK with 55,000+ ratings
- + Instantised formulation mixes cleanly in cold water
- + 20+ flavour range with Double Rich Chocolate consistently 4.6 stars
Cons
- – Premium price tier above MyProtein and Bulk
- – Contains soy lecithin and artificial sweeteners
- – Smaller 450g tubs poor value vs 900g and 2.27kg sizes
●Nutrition per scoop · 23.6g protein in 31g▼
Protein makes up 76%
of this 31g scoop · 114 kcal total
Are whey isolates worth their higher cost per 25g of protein?
Whey isolate costs 18% to 30% more per 25g of protein than the same brand's concentrate, and it is worth that only if lactose upsets you or you are counting every calorie. Isolate is filtered further, so it carries more protein per 100g (81g to 82g against 71g to 72g here) and less lactose and fat. It does not build more muscle at the same protein intake in any study we found.
| Brand and pack | Concentrate per 25g of protein | Isolate per 25g of protein | Isolate costs |
|---|---|---|---|
| Bulk, 1kg (Amazon UK) | £1.16 (Pure Whey, £32.99, 71g) | £1.48 (Pure Whey Isolate, £47.98, 81g) | 27% more |
| Bulk, 2.5kg (Amazon UK) | £1.10 (£77.99) | £1.30 (£104.99) | 18% more |
| Myprotein, 2.7kg (core flavours) | £1.18 (Impact Whey, £91.49, 72g) | £1.53 (Impact Whey Isolate, £135.49, 82g) | 30% more |
If you do want an isolate, buy the larger bag: Bulk Pure Whey Isolate drops from £1.48 to £1.30 per 25g of protein between the 1kg and 2.5kg bags. Our best whey isolate guide ranks the isolates, and whey isolate vs concentrate explains the difference in detail.
Which high-protein powders are actually worth the extra money?
A higher protein figure is worth paying for when it lowers your cost per 25g of protein, not when it only raises the tub price. Prozis Supreme Whey has 80g of protein per 100g, the most of any whey in our table, but at £1.35 per 25g of protein it still costs more than Myprotein Impact Whey at 72g. NutriSport 90+ shows the other side: 76g of protein per 100g at 42p, because the bag price is low.
Pay for density when you want smaller scoops and fewer calories per shake, and check the cost per 25g of protein to see what that density really costs.
Which budget protein powders have the best ingredients?
Judge a budget powder's ingredients on the label, not on its review score: star ratings mostly reflect taste and mixing. Three things on the label tell you most: which proteins are in it, how much of the powder is protein, and how much else has been added.
On that test, Myprotein Impact Whey has one of the shortest labels we read, at 96% whey concentrate plus flavouring and sweetener, for £1.18 per 25g of protein in the 2.7kg bag. Bulk Pure Whey also uses whey concentrate as its main ingredient, at £1.06 in the 5kg bag.
| Budget powder | Proteins on the label | Protein per 100g | Cost per 25g of protein |
|---|---|---|---|
| Myprotein Impact Whey | Whey concentrate (96%) | 72g | £1.18 (2.7kg) |
| Bulk Pure Whey Protein | Whey concentrate | 71g | £1.06 (5kg) |
| Protein Works Whey Protein 360 Gold | Whey concentrate and isolate, milk protein, soya protein, hydrolysed whey | 67g | 75p (4.8kg) |
| Protein Works Whey Protein 360 Black | Whey concentrate, soy isolate, milk protein | 59g | 71p (4.8kg) |
| NutriSport 90+ | Whey, micellar casein, soy isolate, rice protein | 76g | 42p (5kg) |
Soy and milk protein are complete proteins, so a blend is not low-quality protein. The trade-off is that the cheapest powders reach their price partly by mixing in cheaper proteins, so if you want whey and nothing else, the 100% whey concentrates are the ones to buy.
Which budget whey matches the quality of the expensive brands?
Myprotein Impact Whey and Protein Works Whey Protein 360 Gold come closest on the label: 72g and 67g of protein per 100g, against 76g for Gold Standard, at £1.18 and 75p per 25g of protein. Quality here means the protein you actually get per scoop. Basic lines, such as Bulk Basic Whey at 56g with soy added, are cheap partly because they carry less protein.
| Whey | Protein per 100g | Powder for 25g of protein | Cost per 25g of protein |
|---|---|---|---|
| Optimum Nutrition Gold Standard | 76g | About 33g | £1.42 (2.27kg) |
| Myprotein Impact Whey | 72g | About 35g | £1.18 (2.7kg) |
| Protein Works Whey Protein 360 Gold | 67g | About 37g | 75p (4.8kg) |
| Bulk Basic Whey | 56g | About 45g | 64p (2.5kg) |
Big-brand 100% whey concentrate
MyProtein Impact Whey Protein Powder
900g bag
UK's bestselling whey concentrate with 82g protein per 100g. Regularly discounted 40-60% - never pay full price.
or compare all UK prices →Big-brand 100% whey concentrate
Pros
- + 82g protein per 100g high purity
- + Cheapest per serving during sales
- + Huge 60+ flavour range
- + 5kg bags for long-term savings
Cons
- – Full price is poor value
- – Needs discount code to compete
- – Reformulations change taste occasionally
●Nutrition per scoop · 21.6g protein in 30g▼
Protein makes up 72%
of this 30g scoop · 113 kcal total
What is the best mid-priced whey between £15 and £25 a kilo?
Protein Works Whey Protein 360 Gold is the best mid-priced whey we found: £20.00 a kilo in the 4.8kg bag and £21.66 a kilo in the 2.4kg bag at the one-off price, or 75p and 81p per 25g of protein. It carries 67g of protein per 100g. NutriSport 90+ in the 2.5kg bag sits in the same band at £16.80 a kilo and works out cheaper per gram of protein at 55p, but it is a blend of whey, casein, soy and rice protein.
| Whey and pack | One-off price | Per kilo | Cost per 25g of protein |
|---|---|---|---|
| NutriSport 90+, 2.5kg (Amazon UK) | £41.99 | £16.80 | 55p |
| Protein Works Whey Protein 360 Gold, 4.8kg | £95.99 | £20.00 | 75p |
| Protein Works Whey Protein 360 Gold, 2.4kg | £51.99 | £21.66 | 81p |
| Protein Works Whey Protein 360 Gold, 1.2kg | £28.29 | £23.57 | 88p |
Most 100% whey concentrates sit above this band: Bulk Pure Whey Protein costs £30.00 a kilo in the 5kg bag on Amazon UK and Myprotein Impact Whey £33.89 a kilo in the 2.7kg bag. For the full range of cheap options, see the cheap protein powder guide and this month's cheapest protein powder per 25g ranking.
Is a batch-tested whey worth paying more for if you get drug tested?
Yes. If you are drug tested, certification matters more than price, and it does not have to cost much. UK Anti-Doping says athletes are solely responsible for any prohibited substance in their system, however it got there, and advises using only batch-tested supplements checked on Informed Sport.
Applied Nutrition Critical Whey is in Applied Nutrition's Informed Sport range in its Chocolate Milkshake, Strawberry Milkshake and Vanilla Ice Cream flavours, and Vanilla Ice Cream costs £1.14 per 25g of protein in the 825g bag on Amazon UK.
| Step | What to do |
|---|---|
| 1. Choose a certified product | Applied Nutrition Critical Whey in a certified flavour: £1.14 per 25g of protein (Vanilla Ice Cream, 825g) |
| 2. Check the batch | Look up the batch number on your tub on Informed Sport before use, as UKAD advises |
Not every flavour of a tested product is certified: other Critical Whey flavours are cheaper but sit outside the tested range, so match the flavour and batch. For every tested option, see the best third-party tested protein powder guide.
Informed Sport certified flavours
Applied Nutrition Critical Whey Protein Powder
2kg bag
Protein powder from Applied Nutrition. Compare prices across UK retailers.
Buy Critical Whey Protein Powder →See the price on AmazonInformed Sport certified flavours
Pros
- + Very high protein content
- + Widely available in the UK
Cons
- – Premium price point
- – Contains lactose
●Nutrition per scoop · 23.8g protein in 33g▼
Protein makes up 72%
of this 33g scoop · 128 kcal total
Where does the extra money go?
The extra money on a premium tub goes mostly on brand, distribution and flavour work, not on protein. Global brands spend heavily on marketing and sell through supermarkets and high-street chains, each of which takes a margin. Direct-to-consumer brands such as Protein Works and Myprotein sell mainly from their own sites and skip that step.
Some of the premium buys things you may value: a more consistent flavour, a formula that includes isolate, or batch testing on some products. None of those changes how much muscle a gram of whey protein builds. Our breakdown of why Optimum Nutrition is so expensive goes into one brand in detail.
How do you compare cheap and expensive whey fairly?
Compare on cost per 25g of protein, at similar bag sizes, using the price you would actually pay. Tub price alone misleads, because a cheap tub with less protein per 100g can cost more per gram of protein than it looks, and bag size changes the answer too: see our 1kg vs 2kg vs 5kg guide.
WheyWise works out cost per 25g of protein for every product on the whey comparison. To line up two powders yourself, use the protein comparison tool, and new buyers can start with the best protein powder for beginners guide.
Frequently asked questions
Which third-party tested whey do sports nutritionists recommend if I don't want to overpay?
We do not quote endorsements, but the guidance is clear: UK Anti-Doping advises athletes to use only batch-tested supplements and to check the batch on Informed Sport. The cheapest whey we could confirm in a tested range is Applied Nutrition Critical Whey in its Informed Sport flavours, at £1.14 per 25g of protein in the 825g Vanilla Ice Cream bag on Amazon UK. Other Critical Whey flavours are cheaper but are not in the tested range, so match the flavour and check the batch number before you use it.
Should a student lifting four days a week buy a premium whey isolate or a cheap concentrate?
A cheap concentrate, unless lactose upsets you. Isolate costs about 30% more per 25g of protein: Myprotein Impact Whey Isolate is £1.53 in the 2.7kg bag against £1.18 for Myprotein Impact Whey. Protein Works Whey Protein 360 Gold is cheaper again at 75p in the 4.8kg bag. Spend the difference on food, because hitting 1.4 to 2.0g of protein per kg of bodyweight a day matters more than the type of whey.
What is the best value whey from the big UK brands when it's on offer?
Protein Works Whey Protein 360 Black is the cheapest big-brand whey blend we priced: 71p per 25g of protein in the 4.8kg bag at the one-off price, about 63p with code WW12, and 60p on its OnTap subscription. Myprotein prices single flavours differently and runs frequent sale codes, so check its price on the day: Impact Whey core flavours cost £1.18 per 25g of protein in the 2.7kg bag at the usual price.
Should a beginner buy expensive protein powder or the cheapest decent whey?
The cheapest decent whey. A beginner gets the same protein from a good budget whey, and a smaller first bag lets you find a flavour you like before buying in bulk. Protein Works Whey Protein 360 Gold costs 88p per 25g of protein in the 1.2kg bag at the one-off price, against £1.63 for Optimum Nutrition Gold Standard in its 900g tub. Our beginners guide covers how much to take.
How much more does premium protein cost over a year?
With one 25g-protein shake a day, Optimum Nutrition Gold Standard at £1.42 in the 2.27kg tub costs about £518 a year. Myprotein Impact Whey at £1.18 in the 2.7kg bag costs about £429, and Protein Works Whey Protein 360 Gold at 75p in the 4.8kg bag about £272. That is about £246 a year more for the premium tub.
Do expensive protein powders have more protein per scoop?
A little, sometimes. Optimum Nutrition Gold Standard 100% Whey has 76g of protein per 100g, against 72g for Myprotein Impact Whey, 67g for Protein Works Whey Protein 360 Gold and 56g for Bulk Basic Whey, a whey and soy blend. Lower-protein powders need a bigger scoop for the same 25g, which is why we compare on cost per 25g of protein rather than price per kilo.
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