I think most people tell the truth, but there is a fair bit of embellishment too I think, often with time taken to do jobs and of course income.
I certainly don't fear the eastern Europeans and the £7.00 an hour brigade.
As has already been said, some swarthy east European with a thick accent going around knocking on doors is going to find it an awful lot harder to pick up business than a Brit.
It also takes a long time to build a business, yes, you most certainly can earn very good money in this game, but as Shiner has said, it won't happen overnight, to be in the position of earning a grand a week is going to take years not months.
over time I've done a great many time and motion studies, and some of the times quoted on here to trad clean certain windows are complete cobblers, I've watched some of those that have a go at the speed cleaning competition at the various trade shows, you do see some skilled cleaners in action, but compared to Terry it's the difference between a Hare and a snail :
You will get lots of great advice on here, there is so much collective experience on hand, but there are those that try to big themselves up by exaggerating their exploits somewhat.
Ian