Im looking into getting an iMac, more of a want, not a need. I have to money to purchase a used iMac (I prefer 27") but if the day comes that I have to sell it, what kind of demand do you all see for the 27" base model iMac? I see most macbooks selling like hotcakes online, but not so much the iMacs, Id like to know if Id have any trouble selling it later if I needed to. Is 1400 for a used 27" base iMac (Dec 2012) in near mint condition worth it? Also, is it wrong for us to expect refreshes every year for iMacs? or is that common?