Peter I would suggest you take a pause before you buy anything. It took me over 40 years to find an original issued Leib-Husaren Pelzmütze. That involved decades of studying and collecting Pelzmützen and Totenkopf. The same applied to my issued Braunschweigisches Husaren-Regt. Nr.17 Regt. Nr. 17 Pelzmütze.
To place in context, the Leib-Husaren officer's Pelzmütze on DRM site in post #2 would be in the $20K range+ if it was original, and if it was, it would have sold in minutes. It's been on there a very long time. In 40+ years I have seen exactly three (3) actual issued original Leib-Husaren Pelzmützen for sale. One sold in a German auction for over $23K USD. Fortunately of the three, one is in my home.
Same for an HR17 Pelzmütze. Be prepared to easily spend $5K USD for a good original.
However for both, only after you study Pelzmützen and Totenkopf on Forums until you are half blind, will you understand that 99 of 100 for sale are made up.