SidelineSwap is the world's largest online marketplace for buying and selling new and used sporting goods. It was founded in 2015 with the mission of making sports more affordable and accessible to everyone. The platform allows athletes, fans, and sports families to safely buy and sell a wide range of sports gear across various categories, including baseball, basketball, football, hockey, golf, lacrosse, skiing, snowboarding, and tennis. SidelineSwap has enabled athletes to earn over USD 250 million to date by reselling the extra gear they have at home.
The marketplace operates on a peer-to-peer model, where sellers can create free listings, and buyers can browse through the inventory to find great deals, often at up to 70% off retail prices. Sellers receive payment through SidelineSwap's secure platform once the buyer receives and approves the item. As of April 2024, SidelineSwap had helped over 2 million athletes resell over USD 250 million worth of used sports gear, keeping 180,000 pounds of gear out of landfills annually.
In addition to its core marketplace, SidelineSwap has developed a Trade-in Platform, which provides pop-up events, in-store, and online trade-in options for brands and retailers. This platform leverages SidelineSwap's proprietary marketplace technology and resale data, enabling sellers to choose between direct resale or instant trade-in value. The Trade-in Platform has been adopted by major retailers like DICK'S Sporting Goods and MonkeySports, allowing their customers to trade in used gear for store credits.
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