If you can add a 20% markup while providing the same service and with no impact on sales, that screams that you're undercharging everyone. Up your base price fo

If you can add a 20% markup while providing the same service and with no impact on sales, that screams that you're undercharging everyone. Up your base price for everyone by $40 an hour (if they'll pay $30 more, they'll pay $40 more), and then adjust your suit-wearing premium accordingly.