Like you, I'm quite fond of Canon FD glass (and several FL models also) and I've noticed some price increases on some focal lengths. But they've remained relatively soft with others. Heck, speaking of 50mm f/1.8 FD lenses, I've got a couple of nice old breechlock ones I practically can't give away. I've mounted one on an AT-1 -- a nice little manual-only camera -- just to increase the chance of selling the camera, but I'm still not having much luck. So I'd have to say that you can still pick up 50/1.8 FDs for next to nothing. Using eBay as a source, the prices are still soft on the 50/1.4s as well.