You may not see the value, but with an infant, a three year old, a wife that hates the hobby, and a business to run/law practice, i assure you that every 20 minutes i save is worth more than hundreds of dollars; it can be the difference between being a part of this hobby or not... and the for some of us the money is less of an issue than the timeI seen no value in this device, or any other automatic tester, if all your tank needs is weekly testing. It just doesn't make financial sense, including the time it takes to perform manual testing. Which is my situation, I only test weekly. I do test more often on an as needed basis.