It's really hard to compare insurance without knowing all the details of the insurance you presently have. Deductible amounts make a large difference in the bill. Ours is less than half of yours, but we also store it for the winter months and the bill goes down when it is in storage. I imagine if you full time in yours the bill will be higher than if you only used it periodically.
Without more details about your coverage, it's just speculation.
Howard and Peggy
"Don't Panic"