It also happens to be one of the rarest titles in the GBA library, so it's not exactly cheap. As for what you expect from the digital release, here's the official rundown from Nintendo's game page ...

There is already a diverse lineup of classic Nintendo releases available to Nintendo Switch Online members, and Wario Land 4 looks to offer yet another GBA platforming game for modern audiences to ...

The first Metroid game was released way back in 1986 for the Japanese Family Computer Disk System and later ported to the NES. However, there are two titles in the franchise available on the GBA, ...

Pokemon Ruby & Sapphire for the Game Boy Advance are highly regarded and beloved games in the series, with graphically enhanced visuals and the introduction of the double battle mechanic. Pokemon ...

and GBA applications, which are 'free' to download. Each title benefits from save states (and the ability to rewind the action for the NES, SNES, and GB games). 1.5.1.Upcoming NSO Game Boy (Color ...