Once the Tavern is available or as you get to level 3 you can now do the Auction, and to do it so you have to be in the Tavern place. Once you are in tavern you can now do two actions and its Banking and Auction.
These are the step by step to do the Auction.
1. Click the 'Auction' and it will take you to the Auction place.
2. You will listed item that are currently on Auction.
3. To 'Bid' or to 'Buy' the item you want just click 'Bid now'
4. On Bid , just put the 'saling price' , always keep on mind the surcharge and the charge of Auction. Its like (Ideal Price * 12%(surcharge) ) + 10(Auction Charge) = Total Price.
5. Put the time you want it to be posted on the List.
TIPS on Auctioning your Item.
1. To get the best sale , browse first all the items in Auction to find what is the best sale on the bid. This way you will have idea what is the item that are too low to bid or you sale for high.
2. Don't bid too high if your not sure how much the item cost, try to browse first what is the current price in the market.
3. Even the expensive item can be bid too low if you have the perfect timing . In Auction if the item has coming too common the price could be too low , but if the item too rare you can sale for as much as you can.
4. Beat the buzzer. If you want to out-bid the item , beat the buzzer before you put in your price. Atleast beat it with 5secs, its hard to get it on the right time but it could be master . Just try to click 'Auction' every sec's to refresh the list and refresh the time.
5. If you found a rare too cheap for its original price, take advantage to it. Bid for it and sale it later in the time when the demand rises.