I'd use that in a heartbeat. Here in the UK, there's only eBay and Gumtree where you can realistically sell used stuff and both are a total pain in the ass. eBay doesn't really want private sellers and lets you feel it, plus it forces you to use PayPal, which won't let you have your money for 21 days after you sold something. Gumtree is full of scammers and bullshitters and few buyers.

Please bring this to Europe, we need it too.