Where I live, the current iMac 27" (3,2 GHz Intel Core i5) costs new converted $2250. An aquaintance is selling his (from 2015) for currently $1800. I think it's still way too expensive and I would want to make a bid of $1350. Would that be a fair price? The guy is about to travel the world selling all his belongings... I think I could make a lowball offer. I have been considering buying the new iMac 21,5" but if I can get this one for a reasonable price I'd go for the bigger one. But what is a reasonable price? I have no comparison here because there is no market for 2nd hand iMacs.