I switched out the gauge on my Harbor Freight set up. Now reads great, has a usable range, and has the nice attachment/hose and still probably around $20. Get a quality accurate gauge and kind of build your own.
Spend lots of cash on the Blue-Point or Matco, or buy basically the same thing for half the money...Astro 3018 Digital Tire Pressure Gauge and Inflator.
Mine works great! When I have to check and fill air pressure on five cars, I don't dread doing it now since I bought the Astro. It's fast and efficient.