Gift Card trade sites?

Any good suggestions for sites that trade gift cards. I’ve never used one before, but I have some I would like to trade.

I have a 50 dollar Apple card that I would love to trade for an equal value Microsoft store.

You should have zero problem finding a trade for that, assuming anybody actually has a card for the Microsoft store (I didn’t even know there was such a thing).

I’ve never traded cards myself, but my brother has done so on without any problems.

Anybody know a place that buys/echanges Amazon gift cards? PlasticJungle etc don’t allow exchanges of said cards.