Willing to buy a refurbished product to save some cash? Amazon Renewed allows customers to do just that, and the risk is relatively low. All products are inspected, tested, fixed, and cleaned, plus they're eligible for a replacement or refund within 90 days of purchase. How much you can save varies by product, of course, but we spotted a 6.5-quart Ninja Foodi for $156 versus $180 new. Also, "there's a lot of potential to save on Amazon's own proprietary smart-home tech items, phones, TVs, kitchen gadgets and more," McGrath says. "Plus, buying used is a more sustainable way to shop, which can be compelling for some." Runyan agrees that Amazon devices in particular are a good thing to look for, since it's always best for items to be refurbished by their original manufacturer, if possible.