I was charged a different amount than the total shown during checkout.

All DOKODEMO transactions are processed in Japanese yen. If you have selected a different currency other than Japanese Yen, then the prices shown at the checkout are estimates and are only shown to help guide our customers.
The exact exchange rate at the time of payment may vary due to the payment method or your payment company. Some banks also charge an extra fee for foreign transactions, so please check directly with your payment company.