I couldn't care less about the "commemorative gameboy cartridge"
On the plus side, the Game Gear Micro won't be available just from a single online shop in the USA (with all the consequences this will bring to shipping due to the current world situation). On the other.... I don't think I am interested in buying that.
I want the Shantae game.
(and I am already quite annoyed that the game was made for IOS too... the screenshots I saw seem somehow.... flat, barren rooms, little decoration. I can't shake off the felling that IOS compatibility has worsened the graphics compared to Half Genie Hero)