The wheelchair Segway is not only available from
Gennymobility
Also the German company
www.mobilitycube.de
is constructing one of those models. I think they are affordable, but apart from that I could not report more than what you can see on the website.
A wheeler mate has found out some things, I consider his investigations most interesting. However I can’t guarantee for the correctness of the information.
I will call him Informant Segway:
The scooter by Genny shown in the film clip costs laid-back 15950 Euro (net). I have got this information from the Italian headquarter.
A possible alternative is the MobilityCube reconstruction kit based on a Segway. Costs 3.800,00 €!
The customer either brings his own Segway, or we provide a Segway.
The aquisition of a Segway costs new 7.900,00 € and used from Segway 6.600,00 €.
We arrange the individual approval of the technical control association for costs of 385,00 €. Illumination according to road traffic regulations 50,00 €.
Optionally the customers can exchange the original tyres with tyres of the company Axperts. http://www.axperts.de
Usually an extra charge of ca. 420,00 € bis 450,00 € arises…
Thanks to informant Segway for the investigation!!!
Now we only have to convince Santa Claus as sponsor, and the fun can begin. 
Translator BL
Tags: The Genny, Geländerolli, Rolli, Segway