The reason I bought this was because the shelves are always empty at the big box stores and the mom and pop stores prices are extortionate.I didn’t know such a machine existed, and wow had it changed our lives!!!! I use distilled water for my CPAP machine and hubby uses it for his toothbrush thingy.No more waiting in line, no more stressing! I bought it about a month ago and use it every other day! It’s perfect. ❤️