For half that money harbor freight step drills.
This
https://www.harborfreight.com/2-piec...lls-96275.html
Plus this
https://www.harborfreight.com/3-piec...lls-91616.html
gets you a wider range of hole size, automatic hole deburring, no fear of walking off the center punch like the blairs do, and the smaller sizes clip into impact drivers like my Milwaukee M12 90* driver and can get is some tight places. I like the Blair cutter in a drill press, though.
Either is better than a drill bit. Drill bits don't drill round holes and are just nasty on sheet metal.