I admire the guy's efforts in putting the thing together, but I would not buy it.
Especially because the control bars are in between your legs rather than outside your legs. First of all, it would be a real pain to get off the thing, and a real big reason is when you hit say a hidden tree stump or rock, and the mower comes to a dead stop, the first area of your body to hit those bars will be your crotch area. Eeek! I don't even want to think about it!