But on the front page it's stated no extra charges on credit card usage.
I remember shopping there (was it yodobashi or komehyo....or...?) actually had 免税 counters to refund your taxes in cash on the spot. Had done it quite a few times. Whereas most of them will deduct the 5% tax. I don't remember being added any extra for credit cards usage, but I do remember having some problems with my AMEX. Usually they will ask you for a PIN, but since we have none, just tell them "na-i" or "na-shi" or just hit the enter button. But the AMEX card got repeatedly rejected. I had to call the number on my card and it was still not solved. In the end used my JCB card.
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