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?
Ask them for a bulk purchase of 100 baby chicks and they’ll reduce the price to maybe $4. Bulk at 10,000 will probably get you to $3. Order several million per year and you’ll get $1 or even lower. Maybe even few cents per chick.
So your rotisserie at $5 still includes a modest to large profit, even including cooking, materials, shipping and handling.