If you are talking about receiving an
ebay invoice with extra charges, that is nothing new and the capability has been around for years and years. One use case is if you are buying more items than just what is on the listing. For example, you buy one stamp album then talk to the seller and they have another 2 albums (which are not listed on
ebay) which you want to buy also. So there is space in the invoice to put extra charges, since obviously you have to pay for the 2 other albums as well as additional shipping. Now if you went to pay for auction and there was a previously undisclosed charge added (besides item, shipping and taxes) that would be a big problem, or even if you receive an invoice with extra charges which the seller did not work out with your beforehand, that would also be a problem. In that case, I would ask seller to remove, and I would not pay the invoice if they weren't reasonable.