I get paying a premium for design and quality. I had the same thoughts as OP about Shirogorov until bought one, and have to say, I'm impressed. Fit and finish are impeccable, and action is really smooth as people say. Is it worth the price? That's certainly an individual assessment.
That said, I really don't get Norseman. The design of the blade makes it poor at the one task it's designed for (actually cutting things), you have to buy the one they choose for you regardless of your preference, I've seen the vast majority of them for sale at one point or another (which they make easy to track by sequentially numbering each of them), and they demand a premium for no other reason than scarcity, which could cause the value to absolutely plummet should the maker decide at any point to just start producing more.
Norsemans are a lot like limited production Shiros, I think most of them are purchased by people with the intention of reselling them at a profit.