Depends on where you reside. If you live in an area where there is a high theft report insurance tend to be higher. If the sled is high performance which it is insurance is higher, generally anything 800 or over in engine cc are considered high performance. If your sled you entend to buy is new year insurance will be determined based on sale price, older sleds are usually based on black book value. Also other factors replacement part prices, if repair cost is hgh for particular model manufacture insurance costs are also reflected.
There are ways to decrease insurance costs, one way is to request high deductable (1000.00 or higher if possible), remove theft fire insurance, remove collition insurance. However if you finance the vehicle through a financial instatution you generally need to carry full insurance coverage. You could also try to insure your sled through the winter months, then when the snow is melted and your sled is parked for the summer remove all insurance except fire and theft (if that is possible with your insurance company)
My suggestion shop around right now while there is still no snow! And always insure your sled with maximum liability coverage for your protection.
I am covered with alstate insurance company, and everything I own is insured through them.
Good luck insurance hunting...