I'm about to upgrade my first gen MBP in favor of a 13" unibody and as I've checked prices on eBay I've been really surprised by how high they are. This is good for me, just trying to understand it. The MBP is likely to be worth like 60% of what I paid 3 years ago - I've upgraded the memory and HDD modestly (maybe $100 in upgrades) and... yeah any insight?