I don't think you've seen me seen hit with DCC and have the merchant claim ignorance. Based on percysmith's post in the former thread, the merchant made it seem like it was the customer's fault for using an overseas card even though the he saw the merchant accept DCC on the customer's behalf. I've gotten burned too many times by "Oh, well, let's see." or "Oh, no, that's just for your convenience, but it will all work out" to not get a little testy when people try those same ignorant comments (or outright lies if they know what's up).