Yeah, Ambient Weather pricing doesn't make sense sometimes. Before this people were able to build a-la-carte for less than a complete WS-2000.
Definitely the price of the WS-2000 seems inflated just because it is a flagship product. It launched at a lower price and then the price jumped. Maybe it was because of supply and demand or maybe it was because of trade wars with China and import duty increases. But I'm not certain.