Keystone Light Beer
Keystone light is Coors' economy brand. if you are going to drink 6-10 beers then this is the very best economy beer. If you are going to drink a beer with dinner then any beer will do. As of this post they are selling 15 packs for $6.99 at Walmart. that's 47 cents a beer.
External Link from my friends at ratebeer.com