Archer has sold 330 million copies of his books and thus has no pressing need for money. That however is no excuse for encouraging someone to steal from a writer however successful. What else would you encourage people to thieve and from whom? Anyone who's been to prison?
330 millions copies ? Let's say for the thought experiment that it was sold only on the European continent (including Russia), it would mean that one in two people living in Europe bought a copy.
He’s written quite a bit more than one book (over 25). Sales are >250 million according to his website. His books are practically their own genre in the UK, if second hand shops are anything to go by.