I think I've only had one issue buying music from third-party sellers, and I believe it was -importcds. They sent me the wrong item, and they expected me to pay return shipping back, and then they would send the correct item when they got the incorrect item back. I think they were going to reimburse me for shipping, but I didn't like being saddled with the hassle of doing that when they should really have a prepaid label system in place.