I just read that is no "relist" feature...what else differs from Ebay services?
You can relist auctions c(and get the relist credit) created with Auctiva, but you have to do it from eBay.
I don't use Auctiva's checkout (because I don't like it). I don't think you have access to ebay's pre-filled item information for books, CDs, dvds when you list with Auctiva (someone correct me if I'm wrong).
Otherwise, you can use Auctiva to save a lot of money on pic, templates and scheduling.