Cost varies so much. For me I spent $0 on fencing because they can free range. $0 on a coop because I used an old grain bin and some walnut trees that needed cut down anyway as roosts. $0 on waterers because they were drinking out of a bucket from the stable and a livestock waterer outside using bricks which were also free to build steps up to it and inside so they wouldn't drown. $13 on hatching eggs, $40 on an incubator, $3 on a feeder, and $10 on feed a month. However I use a dozen eggs maybe every 4months so it still isn't cost effective. In the past year I've spent $100s on eggs, $40 on another still air bator, $100 on a forced air bator, $800 on a bantam coop so I could seperate them from the standards, probably $100 on new feeders and waterers, and recently another $100 on fence to build a bantam pen and fence the nearby garden from and for the chickens. I still give away nearly all the eggs. 2 different extremes for cost just in my household.