Has anyone sold there? Any success?

Never sold but have bought several LP's from them - some rare and hard to find and at good prices. They're my go-to spot when I need something, because they email you alerts on items that you want/have wishlisted.

I read a post from them, on Twitter I think, that they have unveiled their new APP.

Yeah, it's currently in Beta, but should be finished soon. This will be one of my favorite apps.