1. Even buying kegs is NOT cheap, considering all invested, I started with just kegs, i'm quite sure my "keg setup" (3 taps in a FREE freezer) hasnt paid for itself yet, but I have no bottles laying around!
2. I DONT care what ANYONE here says, homebrewing for the serious drinker is going to COST YOU MORE, its a hobby. I estimate my homebrew beer to cost me about $2.00+ per beer at this time, but I go all out, I want to keep this hobby for life.
3. Your ONLY opportunity to score "CHEAP" beer is to do it yourself, HOWEVER, this will take patience! You need to wait for the right stuff at the right time. For example, I'll send you some liquid yeast from my collection $6.50 (free to you). Then you need to score your "brew equipment" cheaply. I would be willing ot bet with a reasonable budget you could brew a 5 gallons every week for about $3.00, starting with a $100.00 initial setup investment AND I'm TALKING KEGGED. BUT the ONLY way this will happen is with extreme "invention, research and patience"! 3 qualities people rarely have when looking to catch a "buzz".