We have a lot of great sources here as sponsors bro. I can tell you that
www.sarmsx.com has excellent high quality aromasin. That's what I use. If you'd like a price list for Biotech labs,which is the gear I use let me know through pm and I'll get you one. They have Proviron as well as aromasin
(PM me for a price list for Biotech Labs and 10% discount)