The most useful feature of Competera is that it shows you how much money you're missing out on by not having your products at the lowest price possible. You can then use this information to make decisions before you go live. I don't like that you can't see historical data for past months and years. This makes it difficult to predict future prices. Also, sometimes you have to wait a long time to receive a price update. If you want to know what the lowest price for a product is in realtime, Competera is the way to go!