I have one of things. Bought off Alibaba for about ~$300 shipped.<p>It is fun, but you have to be very careful about stepping on. It is one of those things where the more you panic the more something goes wrong as you overcompensate. I fell when I tried to step onto one on concrete and it was way faster than I was use to so I overcompensated for the pressure my foot was causing and landed hard around my tail bone. And by that point I was pretty experienced getting on (just not on concrete).<p>Snowboarders seem to have a pretty easy time with it. But again, getting on without help is probably the most difficult step.