Thats a bit mental lol... you searched around much ? Ive always been with MCE Insurance so far over the last 3 years... always given me the best price, around £400 everytime. They usually come up on top of all the comparison sites.. but also I would say its worth giving them a ring, cos when I spoke to them on the phone, somehow they made it a lot cheaper the first time I was insured with them. The Derbi is pretty similiar to the YZF... is yours new ? mine was 2 years old, doubt age or value of bike makes much difference though compared to our age though lol