LOL. As a former resident of Germany, I imported many instruments and never had a problem. Just make sure that your PayPal has a good fraud insurance and get UPS to do the packing and then have them insure it.
Where some sellers have a problem is that, without a written O.K. regarding the actual shipping cost from the seller, they won't get the item sent from the seller. So this means one trip to the shipper for packing and cost estimate, then going home and waiting for an O.K. of the shipping cost to from the buyer, and then another trip to the shipper.
So, for some, the objection isn't regarding one having a foreign address rather than a bunch of running around that they don't really want to do. Depending on where the seller lives with respect to the shipper, he just might not want to mess with the running around.
The only way around this that I know, is for the seller to have a shipping charge that both parties agree to, regardless of the actual cost. In that case, take nothing for granted and have a solid paper trail.