I'm looking to sell my my 13" MBP i7 2.7 GHZ that's only a few months old. I will probably be moving back to a Macbook Air as I need something very light for doing field work. My MBP has some decent upgrades, I recently put in an Intel 510 120GB ssd as well as 8gb ram. The machine is in mint condition, with original receipt and box. I'm unsure as how much to price it? Any suggestions? The ram alone cost me $100 and the SSD drive was $300. So pretty much $1549 for the machine plus $400 of upgrades = $1949.