I use a Discogs account to sell records and it is linked to this paypal account. When I set the shipping cost via Discogs and invoice the buyer it sends them to paypal and there is an additional shipping charge added on top of the shipping included in the invoice from Discogs. I end up having to refund the overpayment of shipping every time because of this. I need to know how to turn this feature off. I have looked everywhere on both Discogs and Paypal and do not see anywhere that there is a shipping calculator or the likes turned on. Any help with this issue would be greatly appreciated as it has been going on for as long as I can remember. Thank you!