Toyota Verso Sat Nav installation

[oliverb205]

We have just bought a 2015 Verso Icon from the Toyota main agent. We were told it wouldn't have Sat Nav but when it arrived they said "Lucky you, it has Sat Nav". Only it doesn't, just a button marked Nav. The rest of the car is great, my wife loves it and she will drive it 6 days a week so that is good, but we now feel that Sat Nav would be a bonus.

We enquired at the dealers, who have quoted £850 to upgrade the system which seems a tad pricey. So the question is, is there a cheaper way to install Sat Nav to the existing unit, or it would it just be easier to go to Halfords etc and by a standalone system or use a local radio shop to install a system of their choice.

Oliver.