Also have USAA; we have 3 vehicles (2008 Ford Fusion, 2004 F150, 2000 4Runner) with comprehensive/collision, $500 deductible, etc., and we pay right around $100/month.
And their claims department is fanTAStic, IMHO. I've only had 2 claims, one against my F150, one against an F250 I previously had. The F150's was for hitting a deer; I called them, they sent a claims adjuster, asked who I wanted to use to repair the vehicle, and 5 days after the accident, I had the money in my account.
The F250 was a simple towing claim, but even there, they shined; I was about 40 miles from any decent mechanic, and their limit is something like 20 or 25 miles, I think. I asked if they WOULD tow to the guy I wanted, and the guy said "Sure, although you may have to pay the extra fee per mileage.....awh hell, never mind, we'll cover it." LOL!