I've been debating selling my Miyata 310 just to clear out some room. It's probably the only bike I would part with that is worth anything. I picked it up at a police auction about 15 years ago for cheap, but I've seen them go for a couple hundred bucks on eBay and local CL (NYC).
The frame is in decent shape despite some minor dings and scratches (27 years old). Replaced steel 27" Araya rims with 700c Wolber alloys I had from a trashed bike. Also Brooks B17 saddle in black. Beyond that, just basic maintenance - it rides perfectly.
Don't have any photos on this computer, but I could post some if necessary.
If I can't get more than say $200 I would probably just keep it. What do you guys think I should ask for? Last summer I was offered $300 by a guy I work with but at the time did not want to sell it.