Is it madness?

Thanks for all the good info! I always just assumed that the CO2 canisters & syrup wouldn’t last long and would be more expensive in the long run. Glad to know that’s not the case. Also didn’t know you could trade the canisters in for refills. So I assume you make the soda by the serving instead of making a pitcher full at a time? Do you use tap water or bottled water? (Our town has notoriously bad tap water …didn’t know if turning it to soda would mask the taste or not.)