How does Sonic & Knuckles save?

[Blades]

are there that many differences? I mean, you can always everdrive Sonic 3 Complete which lets you choose between a myriad of those differences IIRC

When you ship my Everdrive to me, draw a big cartridge on the box with a no entry sign over it so I know what it is.

[chilled]

When you ship my Everdrive to me, draw a big cartridge on the box with a no entry sign over it so I know what it is.

I never understood why everyone on this forum can afford hundreds of $ on games and systems but not a 49$ flash cart which allows you to play every past, present and future hack in existence.