hehe, just kidding. apologies.
it's not a cheap pen drive, how about $70
Rare! Original Canon Exclusive Product!
http://www.ebay.com/itm/New-Canon-EOS-5D-Mark-II-4GB-USB-FLASH-DRIVE-LIMITED-/110749230797?pt=PCC_Drives_Storage_Internal&hash=item19c92b26cd