Go on Nathanael get trading standards involved .. hang on a mo' ...
PPB is brilliant because any windy who is daft enough to fall for the hype is going to have to charge top whack to help repay the money he's chucked away and for ongoing filtration too. Great for prices all round.
PPB is brilliant because if said windy doesn't succeed he'll have a few dozen custies at high prices ready to be picked up.
Every one is a winner except the poor sucker who unnecessarily paid tens of thousands for van and system and thousands for filtration when he only needed to pay thousands and hundreds.
And as for hot water, poor old Ionics have got to face geezers fitting geysers (see what I did there?) for a few hundred and doing just as good a job as far as the custy is concerned; and even yours truly has hot enough water for about £50 with an electric element!
No wonder these types rarely post on here (and change those posts to read differently when challenged and run away, remember that?) any more ...