Do you have to start over, MissKriss? I have nearly 4000 listings myself--but they're in the Ebay system. If they've been posted/sold within 90 days, you can retrieve them that way and relist as needed. I have a notebook and print out everything that has ever been listed, even if it didn't sell. It's easy--I just use the regular items-for-sale listing (no photos), and it's one line per listing (pick the smallest print size). As long as you have the item listing number and a title, you can go back to it until it drops off due to age (expired or sold listings), in other words, 90 days. Anything else is current and in the store.
Other than the usual learning curve problems--and Auctiva wasn't particularly easy to transition to originally--I don't see a big deal. I'm more interested in something that WORKS, looks good, and is reasonablly easy to learn. Price isn't even as much of a concern as function, to me. Oh, for the days of Seller Assistant Basic...