I would have to completely disagree. First the vast majority of wheelers don't weld, secondly those that do don't necessarily have any fab skills. My boy is a perfect example, two years formal education in welding, certified, couldn't design nothing to save his life. Lay it out for him and say "weld this by utilizing a drag method so I get a skinny bead with mucho penetration" and he's golden and hard to beat. I've seen plenty of folks as well with design and fab skills that couldn't weld worth a crap. Now that being said, if you do have design, fab , welding skills, a bender or the old fashion way a jig with a torch, yes you can make one as well, but even then there are those that rather buy it as opposed to going through all the R & D and countless hours of work to get it to come out nice and clean as opposed to Redneck looking. I myself used to wonder why businesses charged so much for something that looked so simple. Try to build one and after you're done paying for eletricity, wire, the welder, flappy disks, grinding disks, chop saws, benders, drill presses, drill bits, bolts, and a WHOLE LOT of your time then you'll begin to understand.