I bought one years ago. Knew about them..phoning back to the office etc. kept the guy on doorstep..told him the lowest price I had heard anyone getting one for -50. Let him phone his office on my doorstep..they tried to tell me price was nonsense. Long story short they agreed my price…I let the guy in for a short demonstration..paid by card. End of story. To be fair I mainly use it for cleaning the cars now and maybe spring cleaning. But it is true..they are beyond industrial quality and do a lot of stuff.