There is nothing wrong with people buying a Vax. Vax are aimed at the bottom part of the market. They represent better value than a Dyson, and both brands are made in the far East at the end of the day, and both cheaply made at that.
Dyson aims his vacs mainly at well off men, who like toys. Vax aim their vacs at plain ordinary folk who cant afford a Dyson and just want a cheap and cheerful vac to clean their houses. Some Vax machines are good, and some are very poor, but at the end of the day, its all about PRICE. Coming from Gorton - you must realise that people aint made of money, and no doubt if you weren't selling cheap old Dysons, your customers would not buy new ones, and buy Vax or Hoover instead.
I cannot understand why you would shun repairing a Vax, if the customer is prepared to pay you for it. Parts ARE available for Vax machines - I have no trouble finding them online.