So based upon the refurb prices on Accessories4Less, used CC4001/4300's typically go for around $150-ish? I'm planning to sell my out-of-warranty CC4300 (as I'm transitioning more & more to digital file playback solutions) and I'm deciding whether it's worth repairing before sale or just doing 'as-is' for cheap**.
I called the Marantz "authorized local facility" and their ballparking $100-$150 over the phone for repair, which I kind of figured would be the case. Do un-authorized repair facilities come in with cheaper repair bills, in general? And secondly, whether it be an authorized or un-authorized facility, is it common for them to quote higher, but come in with a lower repair bill? Or can I pretty much count on getting clobbered any which way?

** Situation: the player has a somewhat "sluggish" & sickly-sounding tray rotation. Plus, sometimes the player just "clicks" when I attempt to play a cd, usually when it's the cd that's already slotted in the playback tray position. Then simply by switching to a different tray position and immediately back again, that same cd plays fine. It's been like this for a couple years on both counts, but I've just put up with these issues as the player still works pretty well, otherwise.