Back up camera

Do you have a fancy DVD radio in the dash with a big screen? Many—probably most—of them have an input for a backup camera. If that's the case, you just need a camera and the wiring, which should be less expensive than a whole setup.

I don't have any specific recommendations, though. If you do drive or maneuver at night or twilight, you might want to give some consideration to what sort of low light performance whatever setup you end up with gives.