The Real Real
The most well known online consignment store, The Real Real does all of the hard yards of selling for you. You send them your items (or for U.S. customers, they offer a collection service) and they'll authenticate, photograph, price, and list your items to sell online, and you can receive up to 85% commission for the selling price. If you're looking to buy, the site offers a massive selection of designer items including accessories and vintage bags and shoes.
Marketing itself as a "peer-to-peer social shopping app", London based app Depop has rapidly taken off among models and fashion influencers. Find and follow your favourites, and shop their closets direct, or just keep an eye on their stores to draw inspiration, it's your choice. The upside to the app is that it's not limited to just high end, you can sell any clothing items you wish and the app takes a flat 10% commission. There's also the option to chat with potential buyers and sellers to find out more about items or cheekily haggle a bargain, this app brings a second-hand market to the digital realm.
The ultimate accessories haven, LXRandCo only sell watches, jewellery and clothing, making it the go to for those searching for the perfect vintage statement piece. They keep a wide selection online, with additional selections available in their physical stores across Europe, the U.S and Dubai. As for selling, you can take in your pre-owned items for appraisal, or simply fill in the details and submit photographs for assessment, if they like the look of them, they'll cover the shipping and purchase them off you, to then list online.
For those thinking of parting ways with an old designer favourite, or scoring a new handbag at consignment prices, Rebag is the place to look, with a wide range of "it-bags" like the Dior Saddle Bag and Louis Vuitton Speedy. Instead of waiting for the bag to sell, Rebag offers sellers upfront payment based on designer and condition, so you can shop for something new right away.
Another marketplace-style online store, Vestaire Collective is like a more curated eBay, with a vast collection of high-end designer pieces such as Louis Vuitton, Balenciaga and Dior. Sellers photograph and list their own items, setting their own asking prices. Once an item sells, you ship it direct to Vestaire Collective who authenticate the product, handle the payment and shipping to the buyer.