I just did five attacks on a gold mine to revive the 2,000 plus soldiers. I had 8,000 hats ready to go, almost 800k Gold. I hit revive, and it revived one soldier and left me with 70k Gold. I used over 700k Gold to revive one soldier. That is a brutal exchange rate.
A quick search of the forums shows this:
I just did it again. I spent 610k gold on another 1 soldier
You didn’t lose the gold. Please use the main thread to avoid redundant posts.
Gold will show up on restart of game.