 is to really kind of hardball negotiate with drug companies. So they'll say they don't like your offer, but if you lower the price, we can make your drug a preferred drug without prior authorization. The negotiated prices don't typically get passed directly to consumers as lower co-pays, but they can reduce pressure on insurance premiums. GoodRx says the formulary shrunk the most before 2020. Lately, they've stabilized somewhat. Here's Marsh again.