Followed up with BMWNAV.net about what you get for the $49.99. They gave me an email run around until I asked them directly what I would get for the $49.99. They replied:

"Idrive systems are limited in 'features', you will only get the latest maps 2010 version."

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'04 645Ci, Saphirschwarz Pearl/Black, auto, sport, cold-weather, 19" chromes, Logic 7, 7k white angels, MP3 retro, iPod retro, black grills/gills, Bluetooth retro, upgraded microphones, piano black interior trim
'12 Nissan LEAF, Cayenne Red
'10 Victory Cross Country, Black, too much to list
'01 Honda Magna, Black, too much to list