Well, I was so shocked at spending £500 on arc, flock net and electric that I started a spread sheet to see how soon I'd break even.
Mine get Allen and Page feed, but not the organic. They don't like the local mill's pellets (which are a few pence cheaper and come in 25kg bags instead of 20kg).
As well as the eggs there's the entertainment value - and the holes dug in the grass, pecks taken out of all the low growing fruit, scratched up veggies.