Thanks for that idea John, it's a good one.
@BrianOConnell - I'm afraid that isn't really possible because I have asked one or two Suppliers for this info, but all I got back was, "Well it depends on xxxx and zzzzz and if ......".
So the answer is basically, I'd like to help both them and you but it won't happen. I've done the best I can by strongly suggesting to Suppliers that the very first sticky in their forums is titled WE SHIP TO XXXXXX..... , but without much success. It seems that some may find it too difficult to help you to buy from them.
It's a simple fact in online business that, after you have got some potential customers, you need to make it very easy to buy from you. In fact you haven't succeeded until you've made it so easy to buy from you that people actually email you and say, "Your website is so easy to use compared to the others".
No apologies for repetition of that phrase as it's the most important to any online business. The only real issue with a website, in the end, is Usability. Maybe 99% of website owners don't know that, or can't fix it. That's why some succeed and others fail.
My advice to you is find a Supplier who seems to have some idea of how to make things easy for you. At least, then, you should be dealing with somebody who has realised that they are not the most important item in the equation - you are.