Since the pandemic it's been really hard to find distilled water, and where you find some, it's more expensive than ever. So now in less than 7 months, this distiller will pay for itself. Tip: While it does come with enough for a few months use, order some citric acid too to use to clean off the mineral deposits that will accumulate on the inside of the chamber rather quickly. I think it should be cleaned after every use. Especially if you let it run dry.