At the auction, you can buy the right to an offer from a Fairy-tale Character.
Bids on the auction are made by the type of resource that particular Сharacter needs.
If you are friends with a Fairy-tale Character, that is, gave him a certain amount of resource (to the reserve), the resource for the bid will be taken from the reserve.
If you do not have enough resources in reserve for the bid, then the missing one will be taken from the bag or from the characteristics of the clone.
If your bid is outbid, the resource or Experience will not return to the bag or characteristics of the clone, and in reserve.
You can find out what artifact the Fairy-tale Character will award you when you win the auction, by clicking on his image. This strategic information is not free, you will pay either 10 units of Stone, or 10 units of Wood, or 5 units of Cereals, or 1 unit of Iron, or 10 points of Experience to get it.
The offer, won at the auction, will be available to the buyer within 5-10 minutes after the end of the auction.
New offers appear at the auction every 15 minutes.