I can tell you why you are getting a discount on pricing. The drug companies want to charge high as possible. So the insurers charge a copay to make the patient

I can tell you why you are getting a discount on pricing. The drug companies want to charge high as possible. So the insurers charge a copay to make the patient price sensitive. Now the drug company gives copay assistance to the patient to shield them for the copay. That way they can charge the highest amount to the insurer without the patient feeling he pinch. Now patients without insurance get screwed in this mess so some drug companies provide free medicine for some of these cases. The real answer is the forbid these rebates and force drug companies to sell at a reasonable price. That is why Medicare prevents this kind of scheme. Also California recently restricts rebates on generic medicines. I have an essential drug due to my dialysis that became generic. I used to get a $85/month copay subsidy from the drug manufacturer. When it became generic, the copay became $10. You should have seen how hard they drug company employees were trying to push me to complain to state legislators about this.