"The" Bowl game is not decided yet. Once it is determined, there will be tickets at reasonable prices. It will not be the Rose Bowl (tight tickets) and not likely to be the Kohler Toilet Bowl (give-away tickets). Sometimes (SOMETIMES) a good way is to look for a local hotel with ticket packages that include room + ticket. These are popular in some of the FL areas. The bowl site will also have tickets. For instance, the Outback (a popular choice for Vol fans) has tickets through their distribution for $80. Prime tickets cost a bit more.
The high cost is frequently the hotel room rather than the ticket.