Providers use Sesame to help them fill available times. If their schedule opens up, they use Sesame to set a fair price for an appointment slot that would otherwise go unused. They can see patients who are looking for care, which gives you access to great providers at affordable prices.
Because Sesame is pre-paid, providers know they are getting paid up-front for their services. This allows them to charge less.
You know exactly how much it will cost before you go and your health care provider knows how much they will receive for their work before you arrive. It's a win-win.