The dirty details of gadget buy-back programs[ Thu, 5 May 2011 23:43:43 GMT ]Buying a gadget is beginning to resemble buying a car. The latest brainchild of cash-hungry electronics retailers is the guaranteed trade-in, which promises to buy back a gadget at a specified price, providing consumers with some comfort that they won’t waste their money on ever-upgrading gadgets. But as in many financial arrangements, things are not quite what they seem.