I've been talking to a guy on Craigslist about their Retina MacBook Pro 15" (model # ME293LL/A). Specs are 256gb, 2.0ghz, 8gb ram, Iris graphics, late 2013 model. Purchased in June, warranty expires June 2015. Original price was $1700, new price is $1600, got him down to $1300. Includes original box and charger. Is it a good deal at $1300?