Speaks for itself, but it would essentially make it so that we are aren’t restricted to only shop in a player market. So when we have issues like this where the market place is down, players still have a way to make money. Of course this will also provide its own issues that will need to be ironed out but basically think hypixel skyblock’s bazaar
That or give all sellable resources a flat base sell price and make an npc that we can sell to