We used Intasure for a number of years, but whilst in Calis last year met up with Mustafa (the inspector), we were paying approx £260 per annum with Intasure. Mustafa arranged same insurance, with legal and general, for around £80.
Like any insurance policy, you don’t know how good it is till you have to use it, but that would be the same for Intasure as well.