@Bob *********
it's the just same as your visa or master card. Just a different method via qr scan. So ABA Bank in this case decides I assume, but I think the rate is rate. It's not inflated. Fees are made on the transaction as per usual. The business soaks it up or adds 2 or 3 percent on when paying with an international card.
However, I guess qr scanning might avoid shops adding the 2 or 3 percent???? As they think it's just local to local.