The best trick he pulled with "Models" is selling it as a book about dating, when it's really just about developing self-respect.
I didn't know he was wealthy, but his stories aren't all that removed from your average white college guy in the 2000s. The advice he offers isn't dependent on your income. It's not like "4 hour work week" where the secret was just to pay people to take care of basic tasks and free up your time.