I've heard GNC has underdosed supplements. But that's besides the point... It's way too overpriced. Only things I've bought from them were things that were clearenced.
Just a thought here... but you know most of us buy a big jug of whey for about $25 on the internet, more or less. And in a local joint it may costs as much as $45 or more, Ive seen it. Funny thing is they sell like hot cakes at that price! And the seller always says, "oh yes this will give you lean muscle mass like you wouldn't believe" lol.