I satisfy my urge to collect cool machinery by picking up used film gear. No way can I be buying L glass, but I got a Vivitar Series One 70-210 f/3.5 for $12; it is almost perfect, a beautiful lens. The MOST I've spent on any one piece of film gear is $100 for an EOS-1N body. The average for any one piece is around $40. If a piece gets bid out of range, I pass; the stuff is plentiful, and another lens or body will come around soon enough, often the next day. I've only been burned once, and it was my own fault; I bid and won a Vivitar 135mm f/3.5 that was a Topcon/Exacta mount, for $17 + $8 shipping. I didn't ask before I bid. I gave the guy good feedback; it wasn't his fault.
So I got a couple bags full of cool old lenses, and a couple FD bodies, and I'm happy. It's all less than half one L lens.