I've used AuctionSound and does fall short on a few important things. Lack of accurate reporting of sales in the Report Page. (It DOES NOT total eBay fees from unsold items). They finally added sales tax in the Report Page which is good news. eBay Store support is weak, quantities, automated relisting is there but I can‘t seem to make it work. (which I believe they are working on. I hope they will add a way to tally inventory too and maybe an automatic reorder process!). I feel for PowerSeller below. The cost for AuctionSound is bit pricey and sometimes their updates can be a hassle. Overall it is a very solid service that will save you a lot of time.