Actually, it's designed for the Wii U. It's the same Zelda Wii U game talked about and announced in 2014. It just happens to be super fun on-the-go. But being a gigantic Kirby fan and obsessing over the 3DS games, along with the fact that I continue to play 3DS as my primary portable and don't see that changing for a long time, I don't see myself buying the Switch anytime soon. Even if I didn't have a Wii U I wouldn't put an extra $300.00 on the price tag of $60.00, that's just ridiculous.
What, you're telling me teleportation isn't a thing yet!?
The Wii is a special case, as during its lifespan everyone and their grandmother (mine too) had a Wii but never bought much for it, and what was bought was bought to an extreme. So things like Xenoblade Chronicles while not many people had it, what was there was bought up insanely quick and we won't be seeing that drop for a loooong time.
Plus, it's Nintendo, and people are under the assumption that the games stay fresh forever. Which they kinda do, just not most of the Wii games.
Nearby game store dropped the Wii U copy to $45, but I see your point. Still, I'll wait until the Switch has released a good number of games/the Switch Plus or whatever comes out and the main Switch price decreases.