If you are serious about getting one you might consider getting one with a larger capacity tank. I have a 230 VAC 3 HP 30 gallon tank compressor and I wish I had a 5 HP 60 gallon model. Once you have an air compressor you wind up using it a whole lot more than you think right now. For the cars, bikes, blow up pool floats, air tools, painting, cleaning out gutters, around the garage and work shop, blowing out sprinkler lines in the winter, blah blah blah. The small capacity units are useless for most of what I just mentioned.
Mine is 35 years old and is still in really great shape, but when it finally goes, I intend to upgrade to a larger capacity unit.
If all your going to use it for is blowing the dust off a gun pr two then yea, the cheap little models will do what you need - but that's about it.