Is guaranteed value insurance on an Evora of any benefit?

[Del Lardo]

I've had the renewal through for my Evora and it's more than I paid a year ago despite going from 0 to 1 years no claims (my no claims are on my BMW), when I ran through quotes a year ago 1 years no claims should have halved it.  I understand that insurance has gone up significantly this year and renewals are normally a negotiation but the well respected Lotus specialist insurer has refused to budge.  Asking a Meerkat gets me quotes of £500 compared to £800.  Specialist does include Track day cover which drew me to them last year but despite my best intentions I did none last year and I suspect it'll be the same again this year as I just don't have the time as looking at LoT calendar the dates on circuits that I am comfortable at don't work for me.  The only other benefit would be a guaranteed value on the car but as it's a 2010 car with 60k miles I can't see how that is useful as an insurer would need to pay out the value of a replacement anyway which is probably more than what I paid for it.  

Am I missing something?

[RichardC]

What would the guaranteed value insured be? Might be a useful thing to have as, in my experience, insurers won't necessarily pay out for the value of an equivalent replacement car. When my high-mileage S2 Elise died in an accident, my cheapo insurers initially offered a measly £4500, and only increased that to £5250 after lots of protest including involving the ombudsman. Nowhere near enough to buy a replacement roadworthy Elise.