Use this to pay for any notified shortfall in postage (83p + VAT = £1) £0.83 exc. VAT Quantity: at £0.83 each Add To Basket Once agreed, you can make any extra payments due via this section. The .83p will raise to £1 once VAT is added. So for example if you if owe £10, just select 10 * .83 as the quantity. Then select No Postage on checkout as you dont want to pay again.