This looks like that Free to Play Kirby Game, but with more content and perhaps better...but still doesn't look that exciting. Am I missing something? It is a budget Title for Nintendo being priced at $19.99 but still seems too much.
I think HAL Lab & Vanpool are trying two divergent sales strategies with these spin-off games.
On the one hand you have Team Kirby Clash Deluxe (3DS) and its sequel Super Kirby Clash (Switch). Those are action RPGs spun out of Kirby Planet Robobot (3DS). They're free-to-play with a micro-transaction business model.
On the other hand there's this fighting game franchise, which hails from Kirby: Triple Deluxe (3DS). Kirby Fighters Deluxe was around 7 bucks on 3DS, now Kirby Fighters 2 brings the series to their current hardware with additional Switch tax (presumably a lot of the HD assets are being re-used from Kirby Star Allies?).
Wonder if they're basically A/B testing two different payment structures for their smaller scale games. It's perhaps noteworthy HAL Lab's first two mobile ventures also alternate in this way (Part Time UFO is a 5$ mobile game, while Housuu de Shoubu! Kame Sanpo is free-to-play).