12 MAY 2012
If you are one of those poor unfortunates who got a badge yet can't attend Comic Con, you have only a few more days to request a refund. Tuesday, 15 May, is the deadline. Per CCI, "Refunds are at the sole discretion of SDCC. Sending a refund request or submitting a refund request form does not guarantee you a refund." So make sure you have a good sob story on hand.
If, on the other hand, you're toying with the idea of selling your badge on Craigslist or some such scheme, be aware that you have to physically check in with picture ID at the Con to get your badge. No, not everyone knows this. I've had this idea run by me by two people already (who clearly have never been to the Con.) So unless you're close to San Diego and plan to get your badge, then sell it outside, that idea probably won't work.
See here for details on cancellations and refunds.