Taxpayers are expected to save billions after the Biden administration inked deals with pharmaceutical companies to knock down the lists prices for 10 of Medicare’s costliest drugs. After months of negotiations with manufacturers, list prices will be reduced by hundreds — in some cases, thousands — of dollars for 30-day supplies of popular drugs used by millions of people on Medicare, including blood thinners, diabetes drugs and blood cancer medications. “I've been waiting for this moment for a long long time," President Joe Biden said Thursday, during his first policy-oriented appearance with Vice President Kamala Harris since leaving the presidential race.