I have looked at ALL the eBay analysis tools out there, and this one is the most complete. It pulls all the data from eBay and it is stored on your computer so that you can have all you want available, going back as long as you want to keep it. I have it going back about a year in the categories I sell in and can look at all the buyers, sellers, and individual auctions. It was the most complete reports I can use. It works.