>>11533709In the "Payment Method" part of your account there is a tab to change the currency you pay in above the PayPal and credit card fields. Also down the bottom of every page on the site is a tab to change what currency you see prices displayed in. That doesn't actually change your payment currency, but you need to change it to see the correct currency on the item's page, and reselect it any time you clear your history/cookies.
Even with your bank or PayPal's currency conversion fees, you will still be better off than paying HLJ in anything but yen.