i third ammoman or cheaperthandirt. I get all my ammo from ammo man (but i dont fire 762 rounds).

5000 rounds for under 1000 bucks, seems decent to me?
http://www.ammoman.com/index.htm


someone above me mentioned like 18 cents a piece, so u might want to go that route (if it includes shipping). Some online ammo sales rape u in shipping, ammoman pricing includes shipping and will have the ammo to ur door a few days after ordering.