Alright now that I have your attention.
Unfortunately in a lot of MMOs Auction Houses are conflated with Marketplaces, but they are in fact two different mechanisms for commerce.
Marketplace would be dealing with items that are considered low, medium, and (low) high tiered items. Things like timber, and potions, and ores, ect...
Auction houses are meant to be more for luxury and high tiered items. Items that wouldn’t normally be on a marketplace. Things like legendary gear, Dragon Eggs, Super rare minerals, ect…
Now I’ve always envisioned an Auction House being almost like an event.
It happens every 2-4 weeks.
Players must be physically present at a location/node to be able to participate.
Players have to purchase a ticket to participate (money sink).
The item’s list will be announced 5 days prior (to give players in other ZOI enough time to get to the there).
Items come from player base of course (though 1-2 randomly generated high tiered raw materials might come from the game/auction house itself).
Items can be sold for 2x-4x the maximum marketplace minimum (to incentives players to participate by selling their items). (Also 1x-2x of it could be used as a money sink (ala tax)).
Bids will start at minimum (or maximum) market value and each bid must be at least 10% higher than the last.
Players can buyout an item for maximum price only after the item has reached 50% of its maximum buyout potential.
Thoughts on such a building being implemented in Ashes.