Tickets for the Ultimate Fighting Championship's year-end UFC 155 event go on sale this week.
"UFC 155: Dos Santos vs. Velasquez 2" takes place Dec. 29 at Las Vegas'
MGM Grand Garden Arena and features a heavyweight title fight between
current champion Junior Dos Santos and the man he beat
for the belt, Cain Velasquez, in the pay-per-view's
Ticket prices start at $75 and go up to $800,