How much does chlorine for a swimming pool cost?

Answer 1

Chlorine is a gas at room temperature. It can be purchased in cylinders for the swimming pool industry. From there it depends on what you call expensive. You can't just go down to the local store and buy it. Solid chlorine would need to be stored at below -34oC . This would be expensive.

Answer 2

Maintaing your Swimming Pools ph(alkalinity) reduces your cost of chlorine an the amont of heat from the sun during the season may affect the cost. but i don't have a formula for how much it would cost but swimming pool shops in your area could probably give you a rough figure for your pool.