2 times cheaper? or more expensive? It's about 2 1/2 times more expensive than most Chinese IGF-1 i've seen, and i'm sure their's is the same chinese blue tops everyone else has.
Shit's way overpriced shop around, plus i think it's already reconstituted with A/A and i don't think it would keep as long because after reconstituting it needs to be refrigerated, then diluted with B/W