I don't have much trust in ClickandDie's use of exchange rates. When I got billed, they billed me $13.19 Australian Dollars (?!?). However at the time of transaction, E9.99 would convert to around about AU$12.30. Personally, I would have preferred they billed me in Euro and let my bank handle the currency exchange, but apparantly that's not how things are being done.

Are ClickandBuy asking you for how much you were billed in THEIR currency or YOUR currency? If they haven't specified, I'd give them YOUR currency and let them do any conversion mathematics. You know, just in case they actually tried to do the assessment in your local currency rather than pounds or euro and didn't tell you.

(Ulterior motive: Trying to discern how ClickandDie go about their international billing.)