It will be charged straight to your card, you wouldn't know the exchange rate until it appears on your M2U.
Usually AmEx has higher exchange rate compared to VISA and MasterCard.

Other people can correct me, I might be wrong. I only used once to pay my Flickr account.

2 things about 2.5% here:

1. 5x TP is ± 2.5% cashback (if u take 10k tp to redeem rm50 gst or voucher)

2. 2.5% is also an additional amex fee.

example, on 20 august 2011 the rate for $1 is probably between rm2.97 to rm2.992 (source look between 18 august lowest to 25 august highest).

let say we take it as rm2.9725, if u convert $23, it should be rm68.3675, but with amex, need to + 2.5% so it will be rm70.0766875

urs being charged rm70.08 so it is ± within the range. coz we donno what is exactly rate use by maybank.



edited: make proper calculation

my lowest amex swipe is rm1.40 @ tesco

jusco also usually below rm2. just for drink (can/bottle)

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Added on October 26, 2011, 11:06 pmrm2.20 @ kenny on sunday

rm2.10 just yesterday @ pizza hut

(both amount is after deduct vouchers - redeemed tp @ maybank pudu)

For Amex, the CC# is 4D at the front of the card.