Geez.
Well, I dunno. 'Night vision' has been an add-on for digital camcorders for awhile now, so I imagine a ghetto night-vision ccd would probably be fairly cheep these days, though most likely it's 'light enhancement' night vision and not 'infra-red', meaning that if it's really dark you still won't be able to see shit.
Still, pretty awesome addition to ensure they sell out that version of the game, at least.