It's Generic Percocet, ENDO Pharm calls theirs Endocet. I sometime get the yellows like you do or the white ovals from Watson that have R333 on them. It's the same formula Oxycodone & Acetametphine.
EDIT
That website looks illegal to me.
Post Edited (jpjr50) : 11/21/2014 12:15:01 PM (GMT-7)