This is one of those places that is great in theory for me.  I love the idea of having a place that allows you to reuse scraps or old craft supplies.  I've donated bagfuls of fat quarters and tubes of sequins and so forth here.  However, I've never purchased anything.  I'm really not the kind of person that hoards craft supplies, just waiting for a rainy day (hence, all of my donations) and you can't really shop here with a list like you would a traditional craft supply store.  If you like just browsing for random craft supplies, then this is a great resource.