why are satnav screens so expensive?

My Navman S30 3D is locked on the first screen with the lady hanging out th?

How to change battery?

How to navigate without buying maps?

navman has stopped showing maps ?

how can i fix my navman 685?

The green light on the plug doesnt light up when i plug in my Navman F20?

navman won't power on ?

My navman 250 screen is cracked. Can u repair it?

no power to sat nav?

navman screen?

Cant charge navman?

Navman s100 frozen at start up screen?