Myprotein or Prozis for whey protein: which is better value per kg

Myprotein or Prozis for whey protein?

On price per kg, Myprotein: its median is €45.82/kg against €55.12/kg at Prozis, which is 20 % dearer. The median does not decide on its own: most of the rest of the mark is certification, and there Myprotein has 0 products at level 4 and Prozis has 0.

Which is the cheapest whey protein across the two stores?

Prozis 100% Whey Prime 1000 g from Prozis, at €30.99/kg (1000 g pack for €30.99), at verification level 1 out of 4.

Why don’t Myprotein and Prozis cost the same?

Prozis costs 20 % more per kg than Myprotein (€55.12/kg against €45.82/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. Price per kg and price per dose point to the same store, so the dose does not erase the label difference: Myprotein is cheaper both ways. Myprotein 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.

Which of the two stores scores better?

Prozis 100% Whey Prime 1000 g from Prozis, with 66 out of 100. The score is 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, and it is computed without looking at affiliate links. Prices from October 31, 2026.