06-07-2021 11:53 AM
I doubt if there would be any point. If you tell us the detail we will advise. There are times when VAT is added at checkout; is it that? If however you make an "offer" that will only cover the cost of the item without postage. That applies even if you say "to include postage" [does not work]
Normally though the "price you see is the price you pay".