

It costs ~$150 to build your own CO2 carbonation setup. After that, refills are pretty infrequent at ~$10. That gets you relatively unlimited sparkling water.
If you’re jonesing for specific flavors, flavor powders, extracts, and raw sucralose in bulk on Amazon will run you around $20, or ~$100 total for a decent assortment. It’ll pay for itself in like a year and the powders will last you awhile.
This is cool. I had no idea about most of these.