Right click on realm and open marketplace window, let us trade/buy/sell items within a specific realm.
But don't limit to just buying with tokens or coins, also include hat options and general trade item for item.
Bought item will be inside your hearthfire either old or new, regardless it is inside hearthfire.
Could also act as a biding system, the seller puts an item and asks either specific amount of coins, any store hat, some tokens or specific items, like some specific stat food or curios. The buyer puts the demanded or close enough to get the item, when the seller logs in and checks, they either accept the buyers offer or keep waiting for a better one.
Shouldn't have too many exploits, a simple buy/sell/trade system for being inside a realm which could work like in dead frontier, with a bit of extra of player control like in runescape where they can choose to accept the given item or wait for something better, if it doesn't do too good, they can always cancel it and both parties get back their items.
Let me know how this could be better implemented or changed up, but I think it would be great and safer for solo players to engage with trade without needing to risk going to a village.
Hopefully this will work with any trade and not just high end items, like for example a hermit over farms with crops, so now they can just sell/trade them. More of that good good themepark mmorpgs elements.

