@Derumisis Same thing happened with my SNES, apparently it's something you can actually fix with a specific kind of gel and leaving the plastic outside? I don't remember, but you can look it up.
@Derumisis i'm not sure about your area, but usually small private game stores are the way to go whenever trying to find old game hardware. can't advocate for all, but usually purchases on old consoles come with a bring it back warranty. although prices will usually be higher over online.