Verified answer

you can buy tickets at the door but they are cheaper if you buy them in advance. check comicon.com for more info.

I used to go all the time to the San Diego Comic Con. I've been on both sides of the table... as both a fan and then Pro. You can buy at the door or online or even through the mail. It's a really cool deal... normally tickets run about 50 - 60 dollars... they might have gone up but i doubt it's more than 75. that would be for all three days.