Electronics retailer Gazelle has been calculating up the various values of used electronics, and the firm has found that the iPad will hold its value way better than the Amazon Kindle has so far. The Kindle e-readers have only held, at the most, about 33% of their price after a year of use, while the iPad is usually sold for about 50% of its original price. Even the iPhone is more valuable after it's used: Old iPhones are selling for about 40% of their original price. It's no surprise why: Apple products are continuing to remain in demand even after they're updated, and the Kindle's lower price and fewer features probably doesn't help the resale value either. If there's a not a big difference between the used and new p