Talk:Shop/Purchasing/@comment-183.171.205.68-20151109180717/@comment-26091666-20151112094904

I can only help you with the first case.

The conversions are all done automatically and electronically. It is explained on this page that your financial institution will surcharge you for conversion process and/or applicable fees/charges for this to happen.

The site itself will not tell you exactly how much will you be billed because it assumes you live in Japan and therefore the price on the item itself is as stated. If any financial institution in Japan will surcharge you for using this form of payment then again you will be charged extra for using this method.

In short, the applicable amount that you pay in the end if and when DMM accepts your credit card regardless of where it is from will potentially work out more than the money stated to be spent. i.e., the site states 1000 Yen for one quantity of this item, you might end up paying 1500 Yen or thereabouts after all applicable fees and surcharges has been calculated which are automatic anyway.