感觉JCB和American express没啥卵用，ae的手续费还高，很多商家都抵触。


Average Credit Card Processing Fees*
MasterCard    1.55% - 2.6%
Visa    1.43% - 2.4%
Discover    1.56% - 2.3%
American Express    2.5% - 3.5%
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FROM 60.212.72.*