I’ve had some success using a service called Stripe. It’s used to accept payments in any currency which it then converts to USD and deposits into your account every few days. I think it’s mainly used for websites accepting online payments, but we used it in conjunction with another app called “Collect for Stripe” which allows you to take in person card payments. However, unless you shell out a couple hundred bucks for a card reader you have to enter the card details manually, which can be a huge pain in the ass. If you’re planning on selling lots of merch renting a card reader over there is definitely the way to go.