I'm selling our iMac. It's a late 2012, with a 21.5" screen, 2.7ghz, 8gb memory and 1TB HDD. All good and working, no damage, no scratches. It's lived in a non-smoking environment and has been sympathetically owned. Comes with a Dell keyboard and a fancy 'colour changing' mouse!
I'm not really a Mac guy but will attempt to answer any questions. Much prefer cash on collection or possible a mutually convenient 'meet' up?
Postage may be possible at extra cost, but only as a last resort. Read the courier threads!