Von Rosen's cross, it is !
Germany enacted anti-Nazi laws post-WWII which included banning Nazi symbols, songs and paraphernalia. It's against the law to sell/trade these things and (if you missed it) Germany asked eBay to stop/block this stuff from being seen in the German market. (
http://www.ananova.com/news/story/sm_496463.html)
In this same article, France is mentioned having pursued legal action against Yahoo! for offering this kind of merchandise on line. HiTech probably can't afford to recieve "inquiries" from official reps of those govt's regarding the display of a forbidden symbol.
By the way - this is not an uncommon practice to ban the symbols of the defeated by the victors. The U.S. banned the display of the CSA "Stars and Bars" national flag after the civil war was concluded. The British govt. banned (for a while) the playing of the Highland Bagpipes as an "instrument of war" and the wearing of the kilt after the Battle of Culloden (failed Jacobite revolution) in 1746.
