John,
Is this the one I saw at John K's the other week?
If it is I can't understand why your selling it. There's a massive market out there for pressure washing, we have done about £3K's worth of work last month alone and one of the jobs was massively underpriced by about £500! (not by me)
One man can do £400-£500 worth of work in a day, especially with a big rotary disc cleaner, ours is only a 12" version and it still eats up the block paving.
You'd be far better off keeping it and seeing how it goes. Even if you buy a Prowler, its a 3 minute job to get it out of the van and get the pressure washer kit in, we have never bothered with a buffer tank, the mains water supply has always been enough pressure (ours is the Honda GX390, 4000psi, 13lpm version)
If you do end up selling it and then get asked about pressure washing work, which will happen the day after its gone

give me a call and I'll send someone down to Cram and give you a cut
