Available again for purchase at the discounted price but backordered until 5/31… Amazon has the Capcom Mega Man Zero/Zx Legacy Collection (Nintendo Switch) for $24.90 with free shipping on $25+ or with Prime.
This popular 2020 release has six classic titles in one game: Mega Man Zero 1, 2, 3 and 4, as well as Mega Man ZX and ZX Advent.