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Selection within whey protein (concentrate) · data from
The best whey protein from Amazon: 44 products by price per kg
The short answer. Of the 44 products that pass this filter, the highest scoring is Bulk Basic Proteína de Suero en Polvo | Vainilla | 1,25 kg | 41 Raciones | Hasta 18 g de Proteína | Bajo en Azúcar | Fórmula de Rápida Absorción | Apoya el Crecimiento y la Recuperación Muscular from Amazon: €21.24/kg and verification level 1 out of 4. The selection runs from €21.24/kg to €79.17/kg, with a median of €41.98/kg.
The 44 whey protein products sold by Amazon, scored with the same score as the rest of the site. Its median is €41.98/kg, 7 % below the median of the 17 stores compared (€45.14/kg).
† Some links are affiliate links — they do not change the ranking
Some store links are affiliate links: if you buy through them, this site may earn a commission at no extra cost to you. It changes nothing in the ranking: the score is computed beforehand and without reading those links, and products with no affiliate programme appear exactly the same. How it is calculated.
The three that stand out
Bulk Basic Proteína de Suero en Polvo · 1,25 kg
€21.24/kgNo third-party seal
€28.32 per kg of protein: the cheapest of those that meet the category's requirements and are not underdosed.
Score 73 out of 100: the highest mark, with 35 % of the weight on price per kg.
At Amazon · see how its score breaks down
Crown Sport Nutrition Whey PROtein+ · Proteína de Suero de Leche (WPC) · 834 g
€47.95/kgVerified
Level 4: the certification is backed by a third party, not by the brand. It is the highest scoring of the verified ones.
At Amazon · see how its score breaks down
The full selection
44
products compared
from €21.24 to €79.17
per kg
1
at verified level 4
Filter and sort
| # | Product | Store | Verification | |||
|---|---|---|---|---|---|---|
| 01 | Amazonfree delivery from €35 | €26.55 | €21.24 /kg≈ €28.32 /kg of protein | No third-party seal | 73 | |
| 02 | Amazonfree delivery | €39.99 | €47.95 /kg≈ €63.93 /kg of protein | Verified | 72 | |
| 03 | Amazonfree delivery from €35 | €23.43 | €23.43 /kg≈ €31.24 /kg of protein | No third-party seal | 70 | |
| 04 | Amazonfree delivery | €63.60 | €25.44 /kg≈ €33.92 /kg of protein | No third-party seal | 69 | |
Bulk Whey Proteína en Polvo, Vanilla, 1kg · 3 flavours | Amazonfree delivery from €35 | €34.99 | €34.99 /kg≈ €46.65 /kg of protein | No third-party seal | 63 | |
| Amazonfree delivery from €35 | €17.79 | €35.58 /kg≈ €47.44 /kg of protein | No third-party seal | 62 | ||
| 05 | Amazonfree delivery | €69.95 | €27.98 /kg≈ €37.31 /kg of protein | No third-party seal | 67 | |
| 06 | Amazonfree delivery from €35 | €27.99 | €27.99 /kg≈ €37.32 /kg of protein | No third-party seal | 67 | |
| 07 | Amazonfree delivery from €35 | €29.90 | €29.90 /kg≈ €39.87 /kg of protein | No third-party seal | 65 | |
| 08 | Amazonfree delivery | €149.99 | €30.00 /kg≈ €40.00 /kg of protein | No third-party seal | 65 | |
Bulk Whey Proteína en Polvo, Unflavoured, 500g · 3 flavours | Amazonfree delivery from €35 | €19.99 | €39.98 /kg≈ €53.31 /kg of protein | No third-party seal | 61 | |
| 09 | Amazonfree delivery from €35 | €30.37 | €30.68 /kg≈ €40.91 /kg of protein | No third-party seal | 65 | |
| 10 | Amazonfree delivery | €62.12 | €31.06 /kg≈ €41.41 /kg of protein | No third-party seal | 65 | |
| 11 | Amazonfree delivery | €63.00 | €31.50 /kg≈ €42.00 /kg of protein | No third-party seal | 64 | |
| 12 | Amazonfree delivery from €35 | €19.45 | €32.42 /kg≈ €43.23 /kg of protein | No third-party seal | 64 | |
| 13 | Amazonfree delivery from €35 | €16.38 | €32.76 /kg≈ €43.68 /kg of protein | No third-party seal | 64 | |
| 14 | Amazonfree delivery | €71.30 | €35.65 /kg≈ €47.53 /kg of protein | No third-party seal | 62 | |
| 15 | Amazonfree delivery from €35 | €19.79 | €39.58 /kg≈ €52.77 /kg of protein | No third-party seal | 61 | |
| 16 | Amazonfree delivery from €35 | €19.90 | €39.80 /kg≈ €53.07 /kg of protein | No third-party seal | 61 | |
| 17 | Amazonfree delivery from €35 | €29.95 | €39.93 /kg≈ €53.24 /kg of protein | No third-party seal | 61 | |
| 18 | Amazonfree delivery | €35.95 | €39.94 /kg≈ €53.25 /kg of protein | No third-party seal | 61 | |
| 19 | Amazonfree delivery from €35 | €20.55 | €41.10 /kg≈ €54.80 /kg of protein | No third-party seal | 60 | |
| 20 | Amazonfree delivery | €82.50 | €41.25 /kg≈ €55.00 /kg of protein | No third-party seal | 60 | |
| 21 | Amazonfree delivery | €83.95 | €41.98 /kg≈ €55.97 /kg of protein | No third-party seal | 60 | |
| Amazonfree delivery | €49.95 | €49.95 /kg≈ €66.60 /kg of protein | No third-party seal | 58 | ||
| 22 | Amazonfree delivery | €38.14 | €42.38 /kg≈ €56.51 /kg of protein | No third-party seal | 60 | |
| 23 | Amazonfree delivery | €38.90 | €43.22 /kg≈ €57.63 /kg of protein | No third-party seal | 60 | |
| 24 | Amazonfree delivery | €43.90 | €43.90 /kg≈ €58.53 /kg of protein | No third-party seal | 59 | |
| 25 | Amazonfree delivery | €44.00 | €44.00 /kg≈ €58.67 /kg of protein | No third-party seal | 59 | |
| 26 | Amazonfree delivery | €44.90 | €44.90 /kg≈ €59.87 /kg of protein | No third-party seal | 59 | |
| 27 | Amazonfree delivery | €89.90 | €44.95 /kg≈ €59.93 /kg of protein | No third-party seal | 59 | |
| 28 | Amazonfree delivery | €79.99 | €49.38 /kg≈ €65.84 /kg of protein | No third-party seal | 58 | |
| Amazonfree delivery | €46.13 | €51.31 /kg≈ €68.41 /kg of protein | No third-party seal | 57 | ||
| Amazonfree delivery | €46.14 | €51.50 /kg≈ €68.67 /kg of protein | No third-party seal | 57 | ||
| Amazonfree delivery from €35 | €34.99 | €56.44 /kg≈ €75.25 /kg of protein | No third-party seal | 56 | ||
| Amazonfree delivery from €35 | €17.99 | €59.97 /kg≈ €79.96 /kg of protein | No third-party seal | 56 | ||
| 29 | Amazonfree delivery | €50.90 | €50.90 /kg≈ €67.87 /kg of protein | No third-party seal | 58 | |
| 30 | Amazonfree delivery from €35 | €32.41 | €54.02 /kg≈ €72.03 /kg of protein | No third-party seal | 57 | |
| 31 | Amazonfree delivery | €44.95 | €56.19 /kg≈ €74.92 /kg of protein | No third-party seal | 57 | |
| 32 | Amazonfree delivery | €51.90 | €57.16 /kg≈ €76.21 /kg of protein | No third-party seal | 56 | |
| 33 | BioTechUSA 100% Pure Whey · 400 g · 2 flavours | Amazonfree delivery from €35 | €22.90 | €57.25 /kg≈ €76.33 /kg of protein | No third-party seal | 56 |
| 34 | Amazonfree delivery | €58.90 | €58.90 /kg≈ €78.53 /kg of protein | No third-party seal | 56 | |
| 35 | AMIX Proteína Whey · 2 flavours | Amazonfree delivery | €63.90 | €63.90 /kg≈ €85.20 /kg of protein | No third-party seal | 55 |
| 36 | Amazonfree delivery from €35 | €9.50 | €79.17 /kg≈ €105.56 /kg of protein | No third-party seal | 54 |
No product makes that cut
Out of the 44 in this table, none meets every filter that is currently set at the same time.
44 products in this table
What each tub contains
Median dose per serving
Price per kilo does not tell you how much active ingredient is inside the kilo. This table does: for each ingredient, the median dose per serving at each store and how many products reach the dose backed by studies (the same reference this site scores with).
| Ingredient | Amazon | All other stores |
|---|---|---|
| Whey protein concentrateEvidence-backed dose: from 20 g per serving | 30.5 g44 of 44 contain it · 4 reach the dose | 29 g207 of 207 contain it · 66 reach the dose |
The dose is per serving, not per tub. A big tub with a short dose forces you to take two scoops to get the same, and then it lasts half as long: that is why the price per dose in the next section does not match the price per kilo.
Why one is cheaper than the other
Factor by factor, with both stores’ data
All other stores costs 9 % more per kg than Amazon (€45.82/kg against €41.98/kg, medians of both catalogues). That difference does not come out of nowhere. These are the data that explain it, with each store’s figure alongside: pack size (median), products with declared additives.
| Factor | Amazon | All other stores |
|---|---|---|
| Cost of one effective dosePrice per kg and price per dose point to the same store, so the dose does not erase the label difference: Amazon is cheaper both ways. | €1.119 | €1.296 |
| Pack size (median)Amazon sells bigger packs, and a big pack spreads the same tub, the same label and the same shipping over more kilos. Part of the price gap per kg is this and not a discount: comparing one store’s small pack with the other’s large one inflates the gap. | 1 kg | 930 g |
| Products with declared additivesWhat the pages of both declare: colourings, artificial sweeteners, anti-caking agents. An additive is not fraud, but it takes up grams that are not active ingredient and is cheaper than the active ingredient: where more additive is declared, the price per kg drops without the product being better. | 0 % | 37 % |
None of these factors is an accusation. They are medians of what each store publishes on its pages on the day prices were collected: where a page does not declare a figure, that store does not count in that row instead of counting as a zero. A specific product can contradict its store’s median, and that is what the full table is for. How all of this is calculated.
This is a filter, not another ranking. The score that sorts this table is exactly the same as in the full whey protein comparison: the only thing removed here is the products that do not meet the criterion above. How it is calculated.
Questions about this whey protein selection
Answered with the data on this page
- Which is the best whey protein in this selection?
- Bulk Basic Proteína de Suero en Polvo | Vainilla | 1,25 kg | 41 Raciones | Hasta 18 g de Proteína | Bajo en Azúcar | Fórmula de Rápida Absorción | Apoya el Crecimiento y la Recuperación Muscular from Amazon, with 73 points out of 100 at €21.24/kg. The 44 whey protein products sold by Amazon, scored with the same score as the rest of the site. Its median is €41.98/kg, 7 % below the median of the 17 stores compared (€45.14/kg).
- Which is the cheapest per kg?
- Bulk Basic Proteína de Suero en Polvo | Vainilla | 1,25 kg | 41 Raciones | Hasta 18 g de Proteína | Bajo en Azúcar | Fórmula de Rápida Absorción | Apoya el Crecimiento y la Recuperación Muscular from Amazon, at €21.24/kg (1250 g pack for €26.55). It is at verification level 1 out of 4: price is only 35 % of the mark.
- How was this selection made?
- The 44 whey protein products sold by Amazon, scored with the same score as the rest of the site. Its median is €41.98/kg, 7 % below the median of the 17 stores compared (€45.14/kg). The order within the table is the usual score: 35 % price per kg against the cheapest in the category, 35 % verifiable quality (certification, purity and additives), 20 % the category's own requirements and 10 % the buyers' rating at the store. Affiliate links do not enter the calculation. Prices collected on October 15, 2026.
Other ways to look at whey protein
Same dataset, another question