In September, she began selling some of the eggs and started keeping track of her income and expenses. [...] She has taken in $457 from egg sales and spent $428, mostly on feed. That left $29 in the Mason jar where she keeps her earnings, to spend the next time she buys feed. But that accounting does not include [...] the $1,500 she spent converting the old shed in her yard to a henhouse.
Emphasis added. Welcome to the club.