I have someone selling me a macbook pro 15" with an intel core 2 duo 2.53 ghz. The model number is a1286 so i believe it also has 4GB RAM and a 250GB Harddrive. The only drawback is that the seller broke off his headphone jack in the audio port and now the speakers don't work since they recognize headphones. He is selling it for $600 and i could probably get him down to $550. So is this a good deal or no? Additional: He said its in very good condition w/ only 2 small nicks/dents. It also comes with the box and charger.