My insulin copay every three months is $100 ($50 for the Novolog fast acting, and $50 for the Tresiba slow acting insulin.) My insurance's portion is closer to $4000 for that 3 months, lst time I looked. Type I Diabetes is expensive, there was a period when I was unemployed and uninsured where I had to pay for type N and type R out of pocket, but the analogs like Novolog and Tresiba is so much easier to control. This is a very good thing.