Im nooab at PoE so also need more info on how the key trade works. Is it always on steam or directly from GGG?

So name your price and provide info. You can message me if you want.

3500 here

This key can be redeemed on the Path of Exile website.
https://www.pathofexile.com/shop/redeem-key

I believe it will also give you a Path of Exile 2 Steam Client Key.
The additional steam key it may provide does not grant early access just client in your steam library.

3000 here

redeemed at steam.