Actually I was pretty surprised on how easy it is to preorder for and from Germany regarding payment, shipment, vat, a.s.o.
There is no doubt that Creditcard isn't the most popular method of payment in Germany but in 2019 I hope having/ using a creditcard isn't that big of a deal and just a few have difficulties because of that. Other payment options would be a huge improvement though.
And depending on official sales after release I guess there will be other options to buy. By then hopefully everyone is glad to have a qwertz layout.