decently priced GR1(s/v) do come up on ebay -- i found a ex+ condition GR1v with a BIN price well under $400 (with case, hood, manual, and a roll of film, hehehe) a little while back. not cheap, but certainly well below the usual $550-700 that they seem to go for, not to mention the Klasse ($700-900) or the TC-1 ($800-1600).
The Rollei 35AFM seems to be uncommon but reasonably priced ($300-400) when they come up. The older Klasses (which is what the Rollei AFM is) can sometimes be found sub-$500 too, but these are the ones with the focusing wheel on the front (where the exposure compensation is on later models). I think the lens is the same, however, and seems to be sharp and beautiful. I was about to buy an older Klasse when the GR1v came up...