How much does motorbike insurance cost?

I'm getting a cruiser type motorbike when i'm 17. I won't be driving it a lot, so i thought this might bring down the insurance... :? but anyway i want to know roughly how much the insurance will set me back. i have a £1600 budget at the moment, i'm wondering whether i can get a bike (maybe second hand) and insurance for a year with that kind of money. Also that includes driving lessons (how much would they cost for a bike) and license (how much does that cost for a bike) Preferably if you're answering this it would be good if you had first hand experience of getting a bike yourself! Thanks :)