Request money fee

When I request money and then go to check the request link, if us card is entered i see a message:

“U.S issued cards and credit card payments are expensive, so this includes a small fee of 1% to cover our costs.”

But then I see the calculated fee is about 1,3%. If I use a test Visa number (4111111111111111) the fee is about 1,8%.

Can you Revolut guys clarify on this so it is clear.

Is there a place where we can check the corresponding fees depending on the card issuer country?