I paid $1,400. for the Alpine NAV. I also added a NECVOX/ROSEN 10 disc DVD/CD Changer, 2 interfaces from PAC (so I still have Onstar and my steering wheel controls), and an amp for the Alpine Sub. IMO Alpine has the best NAV around. The radio, CD/DVD player in the screen you are looking at with the NAV. It's a Rosen/Necvox radio. Features include an integrated DVD/CD/MP3 player, AM-FM tuner, TV tuner*, 45W x 4 channel amplifier, JPEG viewer. You can also add a color back-up camera to it if you want to the AUX button although that is where I have the NAV hooked to since NECVOX/ROSEN has not released their NAV system yet.
Here are a few PICS:
H2 MODS:
Xtremeflow Exhaust,
Power Flash Programmer,
Xtremeflow Intake,
Hella Bixenons,
Polished Skid Plate,
Chrome OEM Wheels,
Chrome Driving Light Bezels,
Rosen R6500,
Alpine DVD NAV