When it comes to shoplifting the rich are different — they steal more.

Rachel Shteir, author of the new book "The Steal," told CNBC Monday Americans with incomes of $70,000 a year shoplift 30 percent more than those earning up to $20,000, according to a recent comprehensive report on the crime studying 40,000 Americans.

Why are the rich stealing? Usually not because of financial need, she said. Often they feel a sense of entitlement. Or perhaps there is shame involved because, she said, some of the items most commonly lifted are condoms, Rogaine, Claritin and home pregnancy tests.