I've been considering selling my (non-color) 20 gb iPod because I lust after the Minis. But, the back of my iPod is engraved wtih some mushy phrase (it was a gift from the hubster). I know it's going to affect resale value a bit, but just how much? How much do you think I can get for a non-color, 20 gb, engraved iPod that has 18 months of AppleCare left? Do you think I can get enough to cover a new Mini? The engraving was SO sweet, but I will definitely not be engraving any iPods I buy in the future.