As others mentioned, it's an auction that closes at a specific time and goes to the highest bidder at that time- centered to the right of the picture of the card in the information there is a timer that is counting down to the auction's end. Good luck and thanks for taking time to look at my auction & comment! :)
She does not "pick" a winner, the auction is set at a certain amount of days. And once the days run out. And the auction ends---the person with the highest bid will be the winner!!! It's very simple- and totally fun!