Just got a brand new iPad 4...and really like it, but a coworker has offered to trade me her like-new late 2009 15" MBP for my pad + $200 on my end. Sounds like a pretty good trade to me...but I have no idea what her MB is worth. It's totally stock too, and will need an OS update as well. What is the 15" MBP worth right now, really? Is a 2009 going to be prehistoric soon? I'm an Apple noob too...and I appreciate the help. Thanks in advance.