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					Originally Posted by Mmmm, Burger (C.J.)  I believe that's right: 
Cap one is 0% (I think they rebate the Visa/MC 1%) 
Amex is 2% 
The rest are 3% or more, including the 1% from V/MC.
Bankrate | 
	
 Of course, it's the floating rate they use for the conversion that's most important, and it's now (as far as I can tell--I call whenever we're going somewhere to try to compare) a total black box.  Before the lawsuits, they would tell you what the day's exchange rate was--at least AmEx and MBNA (and maybe Chase predecessors).