It is hard to name just one resale site as the best because there are many factors to consider. For selling designer preowned clothing, TheRealReal, Vestiaire Collective, Tradesy, and ThredUp are all great. If you want to buy locally, then apps like Nextdoor and 5Mile will help connect you with sellers and services in your area. The next time you are cleaning your home and want to declutter, you can use platforms like eBay, Facebook Marketplace, and LetGo, all of which are a good way to earn some extra money for your second-hand items.