Interchange ++
Gjöld til kortaskema (Mastercard og Visa)
Millikortagjöld
Mastercard: https://www.mastercard.co.uk/en-gb/about-mastercard/what-we-do/interchange/european-interchange-rates.html
Visa: https://www.visa.co.uk/about-visa/visa-in-europe/fees-and-interchange.html