Are ya married? That makes a difference too.....besides the state, the area you stay in, the company, the agent, and you (your bargaining power).
I am 29, married, good credit, I accident in 2001, I moving violation, I pay 400$ for 6 months.......State Farm. Complete coverage 100$ deductible. So I would say for you that sounds about good. Missouri Insurance rates are ridiculous cause we ahve the dumbest drivers here, yet I love the state farm agent, he did some finagling and got me that low rate. I tried even unheard of companies and no one would gimme a lower rate than that so I am happy.
Bottomline.....900/year for a bimmer is cool. If you get lower,...awesome.