Everybody here makes good points. But, maybe to stir the pot I would say that the guy who wrote the article has the wrong attitude but maybe a valid argument. Let us consider two mistresses making $300 an hour. Mistress A ups it to $350 and mistress B lowers it to $250. Let's say they pay $80 to the dungeon and spend one hour each way travelling and preparing for the session. At the end of 1 day with one hour session mistress A earns $250 for spending 3 hours. But if mistress B gets as a result of her more competitive rate an average session of 2 hours she gets $320 for 4 hours. The real hourly rate is the same but at the end of the day mistress B takes more money home and has more flexibility and security.