I've gotten several from German eBay. Be sure that the seller will ship to the U.S. and that they accept Paypal.
It's not all that rare. You can actually add "Paypal" as one of the details in the list so you don't even need to look in the individual auctions. It displays a big "P" at the far end of the list view for each of the auctions that accepts Paypal. Also some sellers will ship to the U.S. even if they don't say so. You just need to ask. Google translate also comes in very handy. When sending messages, I always translate into German and then back to English just to make sure it makes sense.
It's been my experience that they prefer good English to bad German.