I couldn't think of a better title.
As I have mentioned earlier in another thread, I have a knee problem. So I visited a physiotherapy center and they proposed a treatment course and how much it would cost.

Lets forget the medical part, and see the math in the medical bill. They told me it would cost around U.S.$ 1,000. However, if I have the card of XYZ company, they will give me a 30% discount. OK. I called the company and the card was delivered to my home next day. It cost me around U.S.$ 60, and it covers me and my family for one year. Their website lists the clinics, pharmacies, dental centers ..etc. that they cover. The list is not bad. And most of their discounts are between 20-30%, and some 50%

So, someone please help me with the math
I buy their card for $60. Their card tells clinic to drop 30% of their fee, which is , in my case, more than $300 !!!

How does this work ??
What is in it for the clinic or dental center ??
Am I missing something here ???