 of any old Amazon item, even one that doesn't even work, will get you a 20% discount. So many people who've bought Amazon gadgets over the years, they're sitting in a drawer collecting dust. They're worth nothing to you, but they can get you that 20% discount just by using it as a trade-in to buy that new item. The Amazon electronics items are ultra cheap. They're cheaper than pretty much anybody else in the market. This makes them an even better deal.