I saw a retina MacBook Pro on Craigslist and am talking to the seller. It's base 2012 15" (2.3/256/8gb). He has the box and charger as well, and it's a Samsung display. Warranty expires in a couple weeks on November 8 and I can always extend it 2-3 years with AppleCare. He wants $900 cash. Mint condition. Reason he's selling: has to take care of bills for family. Good price?