You may have better luck searching on French ebay. It's such a small item that a French seller may be convinced to ship it the the US if you pay a little extra for shipping. That's what I did when I replaced my UE-8 tail light several years ago. Unfortunately, that seller is not longer active--a shame since he had lots of interesting vintage French bits and many varieties of replacement lenses. Also, in case you aren't already aware, those lenses are made by Soubitez, so definitely include "Soubitez" in your search terms.