Anyone who would pay $2000 or even $1000 for a Model M of any kind is out of their damn mind. But hey, it's your money, who am I to tell you how to spend it.
Personally, I wouldn't pay more than $350 for any Model M, industrial, SSK, or otherwise. And that's me as a collector speaking, not as a user. Once the market had flushed out all the big spenders who will pay any price for a collector's item, the prices will come down to a reasonable market value.