From the Terms & Conditions you agree to when purchasing via Kaligo.com

"Agreement between the Customer and Kaligo Pte Ltd: This website is operated by Kaligo Pte Ltd, a Singapore private limited company."

"BANK AND CREDIT CARD FEES: Many card companies charge their account holders a transaction fee when the card issuer and the merchant location (as defined by the card brand (e.g. Visa, MasterCard, American Express) are in different countries. The currency exchange rate, if applicable, and any transaction fee is determined solely by the bank or other agency processing the transaction. These fees may be applied by the card issuer as a charge to the cardholders account. When applied by the card issuer, the fees will be listed separately from the transaction amount on a credit or debit card statement. This means the amount listed on your credit or debit card statement may be a different figure than the figure shown on the billing summary page for a reservation booked on this Website. If you have any questions about these fees or any exchange rate applied to your booking, please contact your bank."