Maybe. If it is under $10 I don't see why not... simply for the fact that most people won't get it and it might eventually be worth something even if it's useless to me lol Although I can't help but think they're gonna bring out a new Go Plus soon and imma cry. I just replaced mine with a new battery :c
This feels... slightly beyond completely redundant? GO Plus is already a 99% effortless way to play the game, I'm pretty sure there's nobody left complaining about that last 1% of effort you have to spend in reaching down to your belt to press a button.