Hey guys and gals. I've been in the market for a 13" MBP and I Found a ad in LA with a guy selling a 17" MBP unibody for $750. Long story short he said he would take paypal payments and ship. I stay in Chicago and he looked up the shipping rates and all. We have been emailing back and forth and he sent me the serial number of the device and everything matched up. It even is still under AppleCare until oct 2010. He gave me his paypal email and all of that to send him the money. Should I take this immediately. Or should I hold up. Do you think the 17" is too big?