The product card and order flow show an estimated goods amount in your selected display currency. If that currency is temporarily unavailable, the estimate falls back visibly to USD. The estimate must be fresh before it can be used for saved-card authorization.
Goods/order automatic charging is allowed only when the final goods amount is no more than +10% above the fresh estimate snapshot.
A goods estimate is valid for 24 hours or until item details, quantity, destination/address, store, display-currency context, pricing/config, supported-store, prohibited/restricted-items, blocked-destination/sanctions, or checkout rules change.