You only get paid out the market value. For a brand new bike with zero miles that's gonna be what it will cost to get another brand new bike.
Get some age on it and some miles and you'll get what it will cost to replace with similar age and miles.
I'm not up on theese new fangled bikes, is it a single seater? sometimes if you tell the insurer no pillions ever carried then the quote comes down.
Got the asked question about pillions a while ago when insuring the 998, it's mono so deffo no pillions, that knocked some £££ off the quote.
Worth asking if ther are any other "extras" on the policy you are happy to do without, breakdown cover, european cover, legal, etc, etc.
Insuring a brand new, new model, megabike listing at North of £20,000 is never gonna be cheap, thats the price you pay for the latest and greatest