Yeah, I don’t see why they don’t release 4 games on one cartridge. That “might” be worth $20 but it’s pushing it. They were selling these games for less for that lame GameBoy reader thingie before.
Of course, i’m not against them remaking these games with prettier graphics, new courses, etc. and then bundling the classic version with the game. Metroid Zero is like that. They have an enhanced “first version” and you can unlock the original game (among other things) if you finish within a certain time.