I got an email from CompUSA; there is a New Year's Event going on, and they have a 512MB SD card (SanDisk) for $42, and that's an instant price. CompUSA P/N 306231, normally $70.

YOU HAVE TO BRING IN THE PDF AD to get the price. Link to ad:

http://image.compusa.com/pdfs/32887_...ock_Email.pdf?