Auction House

Put a card or a lot of resources up for sale at a price you name. It is the only place to get an older edition of a card, since nobody can print those any more.

Each Auction House shows and buys only what is for sale in cities no further away in hexes than its level plus 1. A taller house reaches further.

Resources are priced in gold for each unit. The form shows what the whole lot comes to.

Each level lets you keep 3 listings open at once, counted across your whole empire.

Trade research adds to both: Market Stalls and Merchant Guilds add a listing for each level, and Trade Routes lets each house reach two hexes further.

The city you sell from needs a Port, because what sells here sails. What you list leaves your city straight away and comes back if you take the listing down.

When you buy, you pay at once and name the city it goes to. It arrives by transport, so it costs you ships and a crossing.

You cannot buy a card with a full collection. Resources you can always buy: they go in a Storehouse and not in your collection.

An exclusive is never sold here for gold. It changes hands on DeviantArt.

Auction House costs 500 wood and takes 16 minutes 40 seconds to build.

You need a Curator's Office at level 1, and a Town Hall at level 5.

Every level after that costs about 35% more and takes about 40% longer than the one before, and stone is part of the price from level 5.