I can't predict the future, but for the Ole Miss game, they were going for $20/pair outside gate 16 (between the 30's) with 15 minutes to go before kickoff. And there were PLENTY available. You might have even been able to get in for free.
Georgia will be a big game, the biggest home game this year, but paying Ebay prices is retarded. Another example: last year's Florida game had tickets in the $60-70/a piece range available on the Strip 2 hours prior to kickoff. Agents take advantage of people being nervous about not finding tickets at the game, or that they'll be like a thousand a pair. I've found, over the years, that if you're patient and just walk to Neyland with cash, you'll be fine.