Like those guys, I pick up bikes to ride, not to collect per se. All my bikes except the Peugeot (a long time ago in a galaxy far, far away) were bought as frame w/fork, maybe with headset. I do not have a fixed price ceiling but I do have a general notion of what I'm willing to spend. The components, wheels, etc. are expensive too so I always end up spending far more than just the cost of the frame. In the end it requires that I really find that bike intriguing.