Why would anyone in their right mind pay $45 for 2lbs of whey isolate, which yields ONLY 83%?
For example, one of the best whey isolates in the markey, AST VP2, is only $35 for 2lbs.
Also, other brands, like for example, AllMax Isoflex, yield much more per 100 grams, up to 90%, and cost much less than $45.
Both AST and AllMax are brands that have been well documented, trusted and extremely well sourced.
Not to mention Dymatize & Optimum, or one of the newest players dominating the protein market, MyProtein, which is cheaper and high quality.