From the San Diego Comic-Con website.
The wait is over! Badges for Comic-Con International 2013 will go on sale February 16, 2013 at 9:00 AM Pacific Time (PT).
The link to EPIC Open Online Registration will be sent to everyone with a valid and confirmed Comic-Con Member ID via email 48 hours prior to the start of badge sales. You may click the link, or copy-and-paste it into you browser. Comic-Con will NOT post this link on our website, Facebook, or Twitter.