What is more likely to fit my budget is the of the two-wheel scooters that are for sale at Trend Setters Direct.
These scooters function much like the Segway. Operators stand upright and lean forward to roll forward and lean back to slow or stop. I tried one at CES last year and it was easier to manage than I expected.
The 17-pound Trend Setters scooters have 6.5-inch rubber wheels, dual gyros and LED lights for rolling after dark. The scooter has a maximum speed of 10-13 MPH and the rechargeable battery lasts up to 7 hours.
Trend Setters sells the scooters in a variety of colors for $399 - a whole lot less than the price of that other scooter. See the full lineup at the Trend Setters website.