Engraving an iPhone knocks $25 off resale value
Good news : I looked up what the trade-in value is for my iPhone 4S 32Gig. Much to my pleasant surprise, it's $195. Almost enough to pay for my new iPhone 5S!
Bad news: If I hadn't stupidly engraved it, the trade-in price would be $220.
Word to the wise: Don't engrave.