I saw this thread the other day and it got me wondering just exactly how much I have spent on brewing stuff, so I spent most of the afternoon yesterday figuring out the answer, as I had saved the invoices or receipts from almost all the stuff I've bought. Since I resumed brewing 8 years ago, I've spent over $4,800 on equipment/gear, that doesn't include consumables like cleaners, sanitizers, reagents and the like. I'm sure there's at least a couple hundred $ of stuff I overlooked. That number did surprise me, if I'd been asked to do a ballpark guess, I would have put the amount at probable less than 2/3 that much. I run an entirely manual brewery so I have no pumps, no AIO system, I don't keg, and have no fancy digital gizmos. I do have a few extra fridges I got for free from my appliance store days that are ever so handy for lagering and crashing, so that saved me a chunk of money. To date I've brewed and bottled a bit over 14,700 bottles of beer, so my equipment cost per bottle is a tad under $0.35. My ingredient cost per bottle ranges from $0.30 @ to around $1.30 @ depending on the beer; the average is probably around $0.45 - $0.50 per bottle, so the amortized equipment and consumed ingredient cost is well under $1 a bottle. At this point, the only significant purchases I have left to make are an exhaust system and water filtration, which I'm pretty sure will be well under $1K.
I didn't take up brewing for the enjoyment of it, and while there are aspects of it that are enjoyable or at least satisfying, brewing is about making something I'm going to consume that I can't buy in stores, it's not about having fun - brew day is an 8-to-16 hour workout. That being said, if I wasn't brewing, I'd be working at something else that's probably less satisfying.