If a SS ring is your thing (hey that rhymes
), I think you have two options and that is buying one that comes with solid provenance, which will be very difficult or buying a Soldbuch or award document of a Waffen SS member that was actual awarded it, it is a type of award that is actually documented.
In the second case you don't have a ring but you also don't have the constant headache that you might own an expensive reproduction, it is a piece of jewelry that your not going to wear anyway I suppose.
Honestly I don't really understand why people still buy these with all the controversy that surrounds them.
Those SS honour rings aren't really a complex or expensive pieces of jewelry, they weren't back then and they aren't now.
It is cheap silver and a simple design, making them isn't a complex project for a jeweler, I bet students in their first year of training can make them.