To help, we have guides to find the best pre-owned camera gear, furniture, air conditioners, laptops, and kitchen gear at a fraction of the original cost. But in general, take advantage of local secondhand stores, rental services, swapping or Buy Nothing networks, yard and stoop sales, and online marketplaces like ThredUp, Facebook Marketplace, or eBay. Many big clothing, furniture, and appliance retailers—such as Patagonia, WestElm, and Vitamix—as well as boutique brands are increasingly offering trade-in programs and secondhand marketplaces, so you may want to check on your favorites.