I buy nothing in store as it is an absolute rip off here in Australia. Luckily I do have a direct manufacturer for whey protein so while I sell to my clients, I have always gotten all bagged protein for free.
As far as everyone bagging the shit out of whey protein.... whether it be concentrate or isolate, I beg to differ. I and many of my clients have seen great results from it. Do I think people should get all their protein from powder... no but it is a SUPPLEMENT. I can't eat eggs so I sure as hell can't drink a carton of egg whites or will spend my life in the shitter.