I bought a rebuilt brake caliper today and installed it onto my E36. Some weeks back I broke the bleeder valve off while changing the fluid in the car's brakes. I tried valiantly to get it out but couldn't. I only paid $37 for a rebuilt caliper (would've been about $50 more had I not turned in the one that came off the car).
Some may say that it is junk and won't last. I don't buy that at all. Go and pay $200+ at a dealer if you like, let 'em install it too for another $100. I was pleasantly surprised at how cheap it was.
BTW, this parts place is one I've used for years for my other Beamer parts...quality business and quality people running it.