Actually, it is not even standardized across a specific chain. I reside in the US but have used my foreign billed CC's for the last couple of years, and it is rare to encounter DCC. Not even all Best Buys will do it, that is why I had posted that picture, as I was surprised to find it in a non-touristy place. (So far encountered at 2 best buys, Tri Cities, WA and Akron, OH). I've probably encountered DCC about once a week over the last couple of years and in extremely weird places. Especially in rural parts, the shopkeep's typically do not have any idea what it is or why it's doing that and I've had my more than fair share amount of people that are surprised that there's an international credit card and that the rest of the world is in the same banking system 😂 Last encounter was in rural Alabama last week, in a small Asian dry cleaner.