I'm interested in picking up maybe a couple used Minis, but I'd like to get some opinions first from those who have bought used Macs from CraigsList, etc. I'm not wild about horsing around with ebay, really... Obviously, I'm avoiding the CL ads offering brand-new, in-box, shrinkwrapped macbook pros for $500...and other sillyness.. Any experiences to share? thanks! nk