Literally a used Switch game in a big, ridiculous bag with a “New” sticker on it. Imagine going into a GameStop with a game in a bag like this and convincing them to give you credit for it as “New”.
Don’t buy online from GameStop. Actually, just don’t buy from GameStop.
Not related to your point at all, but: The switch uses USB-C. Pretty much any USB-C charger will work. For the dock you do want to make sure it can push enough power, but it’s a rather low requirement. I use the same charger for my SteamDeck dock and the Switch dock. It’s the great thing about USB-C. But of course gamestop would try to sell you their generic crap instead of an official one.