Okay in all seriousness I've always been scared to quantify my brewery costs before and all these numbers are extremely off-the-cuff.
I will say that I have done everything myself DIY that I could and am always looking for a bargain whether it be craiglist or flea markets or whatever is on clearance at whatever store I happen to be in at the time.
This is for a 220v 30A three vessel basement electric system and all ancillary equipment that I have.
Control panel and electric setup set me back about - $500 or so,
Keggles, cooler mash tun and all fittings - another $250 or so
Brewstand, exhaust system, pumps, silicone hoses $500 sounds about right
Ferm chamber, temp controllers, fermenters around $300
Kegging equipment 10 kegs at $25 a pop (best purchase I made back when I didnt even need that many), taps, faucets, portable trash can-erator, etc. lets say $400
Misc equipment (hoses, bottle capper, vinator, DIY stirplate, etc. etc. etc.) difficult to say but Ill go with $150.
So somewhere in the ballpark of $2K for capital costs.
10 gallon batches run me around $35 to $40 for a normal gravity pale ale or lager, thats including fermentables, hops, yeast, energy, and water to chill. That comes out to about $0.35 per 12 oz beer. I buy grain and hops in bulk which saves a ton. Also when I reuse yeast (often) that per beer cost comes down.
Id say Ive probably made around 50 batches of beer in my short brewing lifetime, which is around 500 gallons, or 5000 12 oz beers. So if I were to include capital costs in my per beer estimate ($2000/5000 beers = $0.40 per beer), Im somewhere around $0.75 per beer. Each batch I make will get progressively cheaper per beer (without buying more equipment).
Actually after running through this exercise I dont think my habit is nearly as bad as I thought it was (or that my wife thinks it is). Sure beats going to the bar every night, or worse - blowing it all on something stupid like golf.
Time to check out whats on sale at AHS, MoreBeer, NB, BargainFittings, etc.!