Great app for making your music catalogue and to find sellers. However as a marketplace it serves only the interests of the sellers. Sellers can block buyers even if you only fail one transaction, buyers however cannot block sellers. Shipping fees are very unreliable. Find a seller on discogs and buy on eBay. Only good thing there is is that you have PayPal protection but if you're a buyer you probably get more insults on their forum than good advice cause sellers tend to cover up each other