PayPal does, under certain conditions, offer direct instantaneous transfer from my bank account to shapeways bank account.
But that is NOT my new question!
Quite simply, my question:
Does PayPal and my credit card vendor consider a payment from me, in the USA, to Shapeways to be an international transaction?
I'm not sure exactly how this would work, but I suspect Shapeways, would need TWO different PayPal accounts. One account that goes to a bank in USA and the other that goes to a bank in Europe. Your web site would need to select the appropriate PayPal account depending on the shipping address. PayPal may possibly have a way to handle this kind of switching internally to PayPal, but I don't really know.