UFC 155, a hw title fight main event, in the same arena as ufc 160 will be went on sale Oct. 26th for a fight show date of Dec 29. So when the tix go on sale could/should match that.
Also, during each ufc show, they talk about tickets going on sale for the next batch of events, so if you watch each show, watch out for that.
The tickets for ufc 155, very similar to the 160 show, in the exact same arena, were:
$800, $600, $400, $250, $125, and $75. Not sure about a seating chart, but check MGM Garden Arena Website.
The link where I got the info on ufc 155 is below. Enjoy the show if you go. Go for lower or middle level ($600 or 400) seating, not floor seats.