I just posted a similar experience with them and hagerty. I was shocked they wouldn't allow me to pay more to "over cover" the value. In that scenario, they win because they would pay current market, so if I wanted to pay for 130k I'n coverage and totaled, they could pay out current rate. So if that happened to be 100, the premium is in their pocket... also, what good is insurance if they don't cover you fully? So if the car cost 120.to replace and I'm covered for 100, im.exposex by 20%, plus the exclusions like no racetrack coverage. Sounds as bad as 99 left shoes to me..
I ended up with 100k with hagerty with an exclusion of drag strip and 25 and under drivers...