My experience has been prices sort of peak right at and in the days immediately after the announcement date. After Christmas when people who are getting them for gifts are out of the market and some folks realize they won't be able to make it to the bowl site for whatever reason prices start to go back down. At any bowl there are going to be local corporate sponsor tickets that end up floating around. Look around on the secondary market and at the bowl website in the coming days and after Christmas. You should be able to find some at a reasonable price. There are always some Vol fans with extras for sale in the days leading up to a game or on gameday. Check the official party hotel and the local alumni chapter facebook page. Sometimes at the hotel they'll even have a board up for ticket exchange.