Thanks for the clarification.
PayPal works for me, I have used it successfully for transactions with Germany before. That is good.
But I don't like the idea of paying the German MwSt when, as a non-EU resident, I shouldn't have to. After all, I will have to pay Canadian duties and tax when the shipment arrives in Canada. I know that Modellplan will deduct the MwSt from non-EU orders, but they do not list English versions of WDP on their website, so I will ask them by email if they can sell me the English-language upgrade and ship it to me in Canada without MwSt.
Tom