This on the other hand is very simple and does not need any change to the voting process. Simply skip the ones that already got a price and choose the next one in line according to the ranking determined using our voting process as explained in the Wiki.
Edit: Please excuse me if I am too picky about this but I learned from the last time that a voting process is indeed a very delicate topic and even the smallest details could lead to lots of confusion, trouble, changes in the results and what not.