I just ordered PB Master Formula and the Omegas from Amazon. They have arrived and look legit. However, a friend has me all concerned about buying supplements from Amazon. Does anyone know if Mark really does offer his supplements on Amazon? The price difference was nice enough ($99 versus $129) that I bought there versus from the PB site, but it's certainly not worth it if the ones offered on Amazon are of lesser quality or, worse, not even truly from PB. (On Amazon, it said these were made by Primal Blueprint and fulfilled by Amazon. I am a Prime member.) Thanks.