When Epic announced people ask for one thing and it was if they allowed it to be pay in their currency. I seen many request on this before Epic store because Paypal has a fee and Stripe is in the same boat. I look around to see if there are payment processors that convert currency while also helping itch.io still be itch.io and found two best possible answers.
Monei is well known and its also used by Shopify. I think you want this payment processor since it offers many things that paypal might not do.
Don't know much about this but seems like a good choice.
People really want to see their currency, US Dollars is expensive in certain parts of the world and it shouldn't be the customer to convert such complex things or the developer either.