Sapper,
If you are looking for a Vortex, don't let your head run away over them. I have one in extremely good condition, had not done a lot of work and I struggled to get rid of it and eventually a mate bought it because he wanted a red Vortex for his Vortex collection. If I had just taken the bodywork off it and sold it as just an alloy body Powertorque mower I would have got more money for it. We concluded here that the fact people can't actually see the motor it spooks them