I do not understand the mathematics behind the dilemma. I'm assuming only the firts chicks cost money, because down the line they will breed.
But feeding them, housing them - vitamins and doctoring costs a lot of money.
So anyone with couple or more chickens - how much does it cost to have them on the table? And realistically how many eggs do you get?
Glad it worked out for them! I think the main reason "normal" people have trouble is that they don't understand all the issues involved.
For example, my friends didn't realize they had to de-lice and do other things for them. Also didn't know to buy "laying feed" for them to be able to lay eggs.
If people want to do it as a hobby/pets/know where their food comes from/etc that's great. Just realize what you are buying into.