The first is a YC company CostPlusDrugs which has now received backing from Mark Cuban. Started by a physician they're manufacturing 100 common drugs and selling them for a 15% markup over cost. They've also said that they will never go public.
The second is CapitalRx which is a middleman (known as a PBM) that is working for a flat fee and passing on their cost on drugs.
Just like the Jeff Bezos famous quote your margin is their opportunity!