NO, it's not a joke. It is a hand built wheel chair... actually a series of these chairs hat the funder of this site built for his own use. He (bergerman) does not sell them. He rebuilds and refurbishees his old ones. Several tallented members have built clones with varying degrees of success. You must see, and bergerman will tell you, that you might not like what he built to suit
his needs.
A member here, Tom Kilmore, does build a clone. He sells them as
http://www.thepowerchaircompany.co.uk They are usually built to order but Tom recently posted he had a chair available to buy.
There are lots of others doing custom wheelchairs, adaptations and converting there standard chairs to LiFePO4 (the best cells for our use).