man, kinda takes the charm out of taildraggers, don't it?
Before I dropped the hull insurance and went just with Liability, the rate for a 1980 M5-180C was more than $5K! While I am not a high time pilot, I do have a reasonable amount of hours for a plain old mid-50's guy that has been flying for personal satisfaction for a couple of years.
Maules absolutely get hammered across the board due to their normal use and abuse. No allowances are made for flying in the east and the kind of flying that is done. Understand that I am not complaining. I knew the rules going in. You have to have a lot of time in a Maule before rates come down. The pool of planes flying is simply not large enough to make those types of rate discriminations.
What you pay is absolutely tied to your hours in type, nose or tailwheel, complexity, 2 seat or 4, hull value, and aircraft manufacturer plus other stuff I forgot.
Your pay grade and flying mission determine the tipping points in your decision about insurance at this moment in time.