$29,000 is the cost of a low-end luxury car. If people can afford those, people will be able to afford these. Hell, there are people who save up money for years on end just to get a doctor to cut their johnson off. An iBOT would be worth $29,000 to a lot of people.
Medicare will not pay for them.
Good! Every time a new technology or medicine comes out, we shouldn't have to provide it to everyone sick, old, or disabled. Costs would keep rising and government would keep growing. The faster we innovated new things, the faster the burden would grow on the innovators.
If you have enough money to support your robotic wheelchair addiction, or you can sucker someone else into paying for it, then by all means, get one and I'll be very happy for you. This isn't the sort of thing taxpayers should be picking up the tab for.