sell one's life dearly
To do great injury to the enemy before being killed by them.
adv
In a dear or precious manner.
the funeral of our dearly beloved sister
In a dear or expensive manner.
a dearly priced item
At great expense; dear.
He paid dearly for his mistake.
But I take solace in the fact that the public has seen the enormous mountain of evidence proving what Fox did, and Fox paid dearly for it.