Mark me down under the column for "has their own air compressor." I also got mine at Lowe's. I think it was maybe $100? Maybe $150 at most, but it's been a number of years now so I don't remember for sure. It's a pretty good unit with something like a 3.5 gallon pancake style air tank with the compressor on top of the tank. It takes up very little garage space and is light enough to pick up with one hand and move wherever I want, when I move it around. It even fits in the trunk of my Civic HX and I took it to the racetrack last year so I'd have my own compressor. I also purchased a 25 foot hose and an impact wrench for it, which is handy for doing basic car maintenance. I think they're a very good garage investment and it's small enough to tuck under a workbench or something so you can keep it out of the way.