Here in BC if your vehicle is as nice as the day it left the factory you can get collector insurance for around $200 per year. You must have another vehicle to get this rate. You can drive as much as you want and wherever you want but you cannot drive it to work or school.
My truck is not in that condition so I pay about $500 per year with no restrictions.
The one thing you have to watch with Agreed Value is that in most cases it pertains to a total loss of the vehicle. If you are involved in an accident with major damage you cannot expect the Agreed Value. Only for a total loss.
