Your relative gave it to you, meaning it is yours to do whatever you want with it. It's in your possession, not theirs. The only way I can see your relative rightfully having it back would be if you two came to an agreement that if you didn't want it anymore you'd give the consol back. If there was no agreement, you have every right to sell it. Your relative will have to just suck it up.

Say fine. What’s their best price?

To raise cash, you should sell something that’s less irreplaceable — like a kidney.

Yup. I would do the same. Retro gaming is sacred. Don't mess with the retro gamer. But I'm sorry you're having money issue, I think we all kinda do these days...

Maybe if you explain why you're selling it, your relative will help you out with your financial situation so you won't have to sell it. If they can't or won't, then explain to them that since it was given to you as a gift, you can do what you want/need with it. Good luck!

tell them to **** off

Op here I wasn t logged in when I posted this but to answer some of your questions, yes I had the console for a few years and it wasn't working when I got it and I couldn't fix it so I figured I'd sell it to someone that could. I'm keeping the rest of my collection even though they suggested I give that to them "if I wasn't going to keep it anymore(i.e if I decided to sell it)" even though I purchased it when I was a teen. That family member is a hoarder and tends to try to keep stuff other family members are getting rid of or selling.

There should be an option about "everyone sucks" for this cases.