eBay and Paypal fee Calculator provides the necessary tools to determine your fees when selling on eBay. Find out how much you lose to fees before you list your item. Note: only working correctly for Buy it Now items. It needs to be updated to work correctly with auction items. There are a lot of fees associated with using eBay, so now you have the power to determine your final profit on the items you are selling. This calculator was designed by an eBay PowerSeller and Top Seller iSelliMac!