Well, since it's a banned substance now it's pretty hard to find. I will say that epi is basically the only Legal PH that I ever liked. It's good stuff. I have a few bottles stashed, but Im definitely not parting with them lol
a simple google search will land you a bunch of sites then do research on their credibility them before you purchase.
however I would recommend a stack stack from sarmsx over a prohormone anyway for safety and more keepable gains
just checked eBay aswell, there are bottles for sale on eBay