There was company reselling gropep stuff around 2008, they were shut down real fast by the fda,
I bought 1 vial of the gropep igf1 for $500, not sure if it was media or receptor grade, To this day I have never experienced pumps close to what I got from 20mcg of that stuff, could only do 2-3 sets per excerice before too much blood was in the muscle and it was too painful to keep going.
Since then I've tried tons of the cheap igf1 and none of it does anything