Y'know, as I get older and more wise, I think that traders who are not open, honest and above board seem to work much harder at their dodgy businesses than they ever would doing an honest day's work.
That's not just this one under discussion but in all walks of life. Perhaps it's a Brit business thing - to see how long you can get away with your practices before moving on and starting again. Consumer radio and tv programmes are full of 'em!