Is it possible today to add a buffer to the payment authorization amount for an unknown, like shipping? Maybe of our B2B sites calculate the shipping with freight companies after the order has been placed, and they tell the customer on the website that it will be calculated afterward. However, if the customer pays with credit card, we need an authorization that covers the unknown shipping amount.
Is there a recommended way to have the authorization be higher than the amount of order? For example, authorized for $20 more than the order. The final capture will be somewhere between the order amount and the authorized amount.
Scott