I got a tube of crickets from WalMart as a treat for mine for less than $4. They had a blast. I turned the tube upside down and let the crickets crawl out of the hole that is in the tube and the chickens pushed for the position to snatch the cricket out of the hole. It was really fun to watch. Towards the end I opened the tube and they stuck their heads down in it to get the last of them.
It's not something I'd do all the time, but once in a while wouldn't be too expensive.
It's not something I'd do all the time, but once in a while wouldn't be too expensive.