Advice please...

[John]

Hey all! I'm looking for input on what you would consider a reasonable price to pay for a second hand iMac. I have a mid-2007 24" one I'm selling and my research shows a fairly wide range of prices being asked at places like eBay, Craigslist, etc. Mine is in immaculate condition and these are the specs:

Additionally it has:
1Tb 7200 HDD (less than a year old)
Optical Drive (DVD burner)
Full Keyboard with Num Keys and Mouse


Thanks in advance!