company. after seeing his patients' health suffer when they couldn't afford their medications. with mark cuban as a key investor, the company sells low-cost versions of high-cost generic drugs with two approaches, by making the drugs themselves and cutting out middle men in the supply chain. >> we went to a pharmaceutical manufacturer and said why don't we buy this drug from you direct. you'll make more money out of the deal, believe it or not. >> reporter: with no middle man, the company lowered the cost of a drug from $225 a pill to $20. even when drug prices drop, many patients can't take advantage because oftentimes drug prices aren't listed anywhere. >> i had the experience of taking a prescription into a pharmacy and the pharmacist said it would be $500. i went to a few other pharmacies and found other prices, $250, $400. >> doug hirsh started goodrx and