I try not to pump conventions but this one can sell out via word of mouth alone. I am in a Twitter stream of people who went in 2012. Those rascals talked about it all of the time. That is a hurtful feeling being on the outside looking in.
The Super Early Bird sold out. Regular Early Bird is in full effect but unknown for how long.
Crunch the numbers and see if you can do it. If you can, then get going and reserve your spot.
Make sure you have your receipt. Put it in a safe place and put your mind at ease.