I'm trying to see what is possible and not possible for a flow for Order Edit. I have a partner that is developing their own payment app with Shopify Payments.
A scenario that happens a lot is that a customer will place an order, and an item on that order might need to be switched out for a similar item, but can be a different price. If the price of the newer item is higher, then the customer needs to pay the difference, which can be as low as $0.30. I don't want to have to send an invoice, and make a new transaction simply for $0.30.
Is it possible that we can use the order edit app to change out the product, then have the payment app listen to the order edit webhook and re-auth the card for the new amount? Or is there another solution that does not involve having a completely separate transaction?