Market price for Atari STacy2

[NightSprinter]

I'm about to start putting up my stuff for sale in the marketplace again. Since I'm only going to keep my 1040STE (as well as the monochrome and the SC1435 monitors), I wanted to know what would be a fair price to ask for a functional STacy2 (harddrive needs replacement, function keys and numeric keypad keys seem to stick, and the adjustment knobs on the screen work somewhat for contrast/brightness), and a rather fuzzy picture when connecting it to an RGB monitor.

 

I mean the system works, but it could use a little TLC since I got it off an ST haul from a local musician. So if someone can let me know what would be a fair price, I'd greatly appreciate it.