I recently talked with an owner of a 421 that had relatively low multi
engine time. He was partnered with another multi pilot. Both are
instrument rated. He told me that the first year's insurance was over
$7000
and that was after a Flight Safety course and 60 hours with high time
421
MEI.

I've read about new Cirrus SR22 owners paying $8000 for their first
year's insurance. That seems incredible to me that a cabin-class
pressurized turbo'd twin like a 421 could cost less to insure than a
fixed-gear single.