I got no answer from the seller in Seattle but now I found another P1800ES, in North Carolina. What do you think? I live in the Netherlands. Do you know if there is a reliable person/company there who can buy a car for me?
You could handle the purchase yourself, by wiring the money to the seller. You would have to gain his trust first, since you would need his bank account information first. Perhaps consult your bank on how to do this. Then, phase 2 would be to arrange a shipping agent to handle. Have to transport it by land from wherever it is in North Carolina to a major port. Part of NC is on the coast, so it might not be far. I did find this one firm in NC that you might want to call. They say they 'find' vehicles, so they should be able to help with the process. I have no connection with them, nor any experience with them. http://www.theautofinders.com/index.htm
