Immediately after trying period has been expired I subscribed to the Plus service filling the catalog with the products actively. From the very beginning, I was supported by the function of uploading a CSV file to in order to compare prices between competitors. I am actively using it now, in order to track how it is better to vary the prices of certain products in order to successfully compete and manage to hop on the train. Generally speaking, the seller should provide the customers with the goods, reasonable prices, fast service, and the rest of things shouldn't be the seller's headache. I should say Algopix handles all these tasks successfully. I'm considering upgrading to the Master pack to use their marketing advices too. When you are doing business on your own, you need to take any help.