I've seen seveal different computer water testers at the different Pool stores I have been in. Many advertise the Alex or Accuscan machine from BioGuard. These plug into the USB ports and "read" the test strips. I can't find anywhere that sells these. I mean how much could it cost? 200-300 maybe? Sure would like to have one of these as it would take the "Guess work" out of reading strips or "eyeing up the color in the bottle" trick. Am I the only person who thinks this?