Insured my bike today, FCUK ME!! HOW MUCH!!!!!

Basically, I didn't check when I ordered the bike, but essentially, by removing an 800 Tiger and adding the S1000XR, the policy has gone up annually by over £500.00...
I think its a bit of a rip off as I've 3 other bikes on the policy, so surely the risk is minimal, when you break down how many miles is done on each.
My renewal isn't due until June, so I told them to crack on with it, but I shall by comparing the market dot com next year...