I have an MBNA (Avant) card which I got years ago. I very rarely use it, but it has a high credit limit (70k) which is why I have never got rid of it. I jokingly refer to it as my 'running away' card.
Anyway I was abroad recently and my purse was stolen, so I used this card (my BOI cards were in the purse whereas this one was in the suitcase), and I made a purchase of €158. Paid it off once I got the bill, in full at the Post Office.
Anyway I got my next bill today for 83c - surcharge applied for paying at the post office. My alternative is to pay by cheque at a surcharge of €1.15. If I pay the 83c then I will incur another 83c - never ending cycle. So I rang Avant and they agreed!