I'm considering doing some commercial drone work.  I'm curious how many of you have opt'ed to buy liability insurance.

In the uk it's not optional, to sell any photos taken with a UAV you need a PfCO (Permission for Commercial Operation), to get your PfCO you need to show evidence of liability insurance.  Most insurance companies won't touch drone insurance, not even just thief.  I am guessing it's too high a risk and there is not enough empirical evidence for them to fully understand the risks that are there.  The only people I've found so far are https://www.coverdrone.com/  (over £400 for a P4P including £1M of liability).  That's more than all the insurance I currently have for my company for one year.
Anybody else find a cheaper company?
Thanks

Do you have your FAA Remote Pilot License?