Pretty much. Mine was cheap, but my favorite feature is the targeted auto stop. So I set it to a pressure, and it stops when it reaches it automatically, which no gas station pump ever did for me. So I can get them all to the exact same pressure without stopping to check where I'm at a bunch mid fill-up.
Ah ok - if the gas station doesn't have such a machine that's pretty useful. My next gas station has such a compressor, I enter the pressure and it does everything automatically once the hose is connected.
Anyways, keeping your tires at correct pressure probably pays for such a pump in a short time.