Xsellco Price Manager is a repricing system, which updates and recalculates new prices for all the items you have in your Amazon store according to data coming from a plurality of resources (therefore data proceeding from other competitors). Moreover, Xsellco Repricer will determine a market price based on updated information and will calculate a new price for that item according to instruction by market prices and surprisingly allowing the seller to discover and understand which products he effectively needs to focus on and those ones it’s better not to. Thanks to this Amazon dedicated algorithm-based system, the software is able to process any value to be assigned by actually controlling the real availability of the item from other stores, by evaluating in real time the most accurate strategy which not always is low-price-oriented strategy. In a further embodiment, software can be set at predetermined time allowing the sellers to automatically and successfully calibrate prices on a regular basis.