contrary to popular belief, pbr is expensive compared to a lot of other beers. It's pretty much a fashion statement unless it's on sale. In the northwest we have Olympia, and Rainer beer that usually run about 4 bucks less a 30 pack ( 6 more beers than pbrs 24). Or you could go with miller high life, the champagne of beers which is always the same as or less than pbr, and you still get 6 more beers. Also look into hams, and schmidts.
if you just wanna get drunk, get some steel reserve in your body. 3 tall cans for about 6 bucks is more than enough for most people.