Ok, so I've been thinking recently and I want a MP for power, storage, and upgradability. I've been looking on eBay and it seems 12" PBs aren't too expensive. Would it be a wise idea to sell my MBP and buy a MP (octo 2.8) and a 12" PB for portability? Also, how much would a 15" 2.4 glossy 4Gb RAM 250 Gb HD go for with original packaging and in near perfect condition (no scratches or blemishes whatsoever)? PS, mods, I'm not sure if this would go in the marketplace, but move it if it should.