I Paid $9 for a Drug My Pharmacy Said Cost $90. Here’s What’s Actually Going On.
The story
Last week I walked into my local Walgreens to pick up a generic nausea medication. Nothing exotic. A standard antiemetic I’d filled before.
The pharmacist looked at her screen, looked back at me, and said: “I’m sorry, we’re out-of-network with your insurance. The cash price is ninety dollars.”
Ninety dollars. For a generic.
So I pulled out my phone, signed up for GoodRx right there in the aisle, and showed her the coupon. Nine dollars. Same drug. Same pharmacy. Same five minutes.
A 90 percent discount, materialised out of thin air, by clicking a button on my phone.
If your reaction is some combination of “wait, what” and “why isn’t that just the price,” you are exactly the person this post is for. Because the answer reveals something most Americans don’t know about how prescription drug pricing actually works — and once you understand it, you can save yourself hundreds or thousands of dollars a year.
Why this matters
This isn’t a niche problem. According to the most recent KFF Health Tracking Poll (May 2025), 43 percent of U.S. adults report not taking a medication as prescribed in the past year because of cost. Twenty-seven percent — about one in four — didn’t fill a prescription at all.1
Every one of those unfilled prescriptions represents a decision a clinician made that this medication is more likely to help than harm. When the patient walks away from the counter empty-handed, the whole calculation falls apart.
And here’s the kicker: a huge chunk of the time, that medication isn’t actually expensive. It just looks expensive at the counter, because of how the system is built.
The four players in the room
When you fill a prescription with insurance in America, there are four entities involved. Most people only know about three.
Player one: the drug manufacturer. They make the pill and set a list price — a sticker price.
Player two: the pharmacy. Walgreens, CVS, your local independent. They buy from a wholesaler and dispense to you.
Player three: your insurance plan. The entity collecting your premium.
Player four — the one most people have never heard of — the Pharmacy Benefit Manager, or PBM. The PBM is the middleman that sits between your insurance and the pharmacy.
And here’s the headline: three companies — OptumRx, Express Scripts, and CVS Caremark — manage roughly 79 percent of all prescription drug claims in the United States.2 They’re owned by UnitedHealth, Cigna, and CVS Health respectively. If you have insurance through a major carrier, one of those three is almost certainly in the background of every prescription you fill.
The PBM is doing most of the actual price-setting. Specifically, the PBM:
• Builds the formulary — the list of which drugs your plan covers and at what tier.
• Negotiates rebates with drug manufacturers in exchange for formulary placement.
• Builds the pharmacy network — contracts with specific pharmacy chains setting reimbursement rates.
Why your pharmacy can be “out of network”
My insurance plan’s PBM and Walgreens didn’t have a contract that worked for both parties. Walgreens — unlike CVS — doesn’t own a major PBM, which means it’s frequently the chain getting squeezed out of networks owned by its competitors. When that contract breaks down, the pharmacy is “out of network” for that plan, and you get told to pay cash.
Why the “cash price” isn’t the real price
The $90 the pharmacist quoted me is what’s called a “Usual and Customary” (U&C) price. It’s essentially a sticker price the pharmacy sets, often artificially high. Almost nobody actually pays it. It exists as a contractual reference number and as the default for uninsured walk-ins who don’t know to ask for anything else.
When you swipe a GoodRx coupon, you are not actually paying cash. GoodRx aggregates contracts from a bunch of different PBMs — PBMs that do have contracts with Walgreens. When you hand over the coupon, your transaction is processed through one of those PBM contracts. You’re piggybacking on a negotiated in-network price between Walgreens and a totally different middleman than the one your insurance uses.
The whole game, in one sentence: There is no single “real” price for your medication. There are multiple negotiated prices, and which one you pay depends entirely on which contract you happen to invoke at the counter.
“But wait — this sounds too good to be true.”
The most common pushback I hear is: “Why would the pharmacy lose 81 dollars just because I waved my phone?”
They’re not. The pharmacy was never going to get $90 from most patients. The $90 is the sticker price. At $9, the pharmacy still makes a profit — just on lower margin. The strategy is volume over margin. They’d rather sell at $9 than have you walk out empty-handed.
This is what behavioural scientists call the “too good to be true” fallacy — the assumption that if something dramatically benefits you and you don’t understand why, it must be a trick.3 In healthcare, that instinct keeps people from taking advantage of completely legitimate savings.
What recently changed (and what’s coming)
This isn’t static — the regulatory environment is moving fast. In February 2026, Congress enacted the Consolidated Appropriations Act, 2026 (H.R. 7148), which includes the most significant federal PBM reform package in decades.4 Key provisions:
• Delinking PBM compensation from drug list prices in Medicare Part D — starting in 2028, PBMs will be paid flat “bona fide service fees” instead of percentages tied to drug prices.
• Transparency requirements — PBMs must provide employer health plans with semi-annual reports on net drug spending, rebates, and “spread pricing.”
• “Any Willing Pharmacy” provision — starting 2028, drug plan sponsors must allow any pharmacy meeting standard contract terms to participate in their networks.
• 100 percent rebate pass-through from PBMs to employer health plans.
Translation: the policy landscape is finally acknowledging what patients have been experiencing at the counter. But none of this is in effect yet for what you pay today.
How Should This Modify Your Practice?
For patients
Here’s your three-step habit. Every prescription. Every time.
1. Ask. Before you hand over your insurance card, ask the pharmacist: “What’s the cash price on this?” That single question changes the conversation.
2. Compare. Open GoodRx. Open Cost Plus Drugs (costplusdrugs.com). Check the manufacturer’s website for a copay card. Takes 90 seconds in the parking lot.
3. Choose. Pick the lowest legitimate option. If GoodRx is cheaper than your insurance copay, use GoodRx. You’re allowed to do that. It’s not cheating.
One caveat for Medicare and Medicaid enrollees: you generally can’t combine GoodRx with your federal coverage, and using a coupon means that purchase doesn’t count toward your deductible or out-of-pocket maximum. Run the math — sometimes the coupon still wins, sometimes the insurance does. The point is to actually check, not to default.
For trainees and clinicians
Three practice changes that take less than a minute each:
• Normalize the cost conversation. “Is cost going to be a problem with this prescription?” should be as routine as “Any allergies?”
• Learn the cheap equivalents in your top therapeutic classes. For most common conditions, a $4 generic equivalent exists. Know the substitution.
• Mention GoodRx and Cost Plus Drugs by name. Patients won’t use what they’ve never heard of. Pharmacists — under recent gag-clause laws — can now tell patients about cheaper cash prices, but most patients still don’t ask. You can pre-empt that.
The bigger picture
One of the five non-negotiable foundations of long-term health on this show is having a primary care physician. Not just for continuity of care or early detection — for this reason too. A good primary care relationship means you have someone to call when your pharmacy says $90 and you’re wondering whether there’s a cheaper alternative on the same therapeutic class. A 30-second conversation can save you hundreds of dollars a year.
The system isn’t going to advocate for you. Your primary care doctor will. That’s why we put having one in the foundations.
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Author
Dr Adrian Cois is an Emergency Medicine physician and the creator of Overheard in the Emergency Room. He writes and broadcasts evidence-based health education for patients and clinicians at DrCois.com.
Disclosure: No financial relationship with GoodRx, Cost Plus Drugs, Amazon Pharmacy, or any pharmacy chain or PBM. This post is not sponsored. Tools are mentioned because they’re the most widely-used examples of the category, not because of any commercial relationship.
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Related Reading on DrCois.com
• Episode 1 — The Two-Tier Blueprint for Longevity
• Quick Hits Ep 2 — What to Expect When You Come to the ED with Abdominal Pain
• Quick Hits Ep 3 — Shift Work and Sleep
• Episode 6 — Hypertension and the Shared Decision
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References (AMA Style)
1. KFF. Public Opinion on Prescription Drugs and Their Prices. KFF Health Tracking Poll. May 2025. Accessed May 2026. kff.org/health-costs/public-opinion-on-prescription-drugs-and-their-prices/
2. Federal Trade Commission. Pharmacy Benefit Managers: The Powerful Middlemen Inflating Drug Costs and Squeezing Main Street Pharmacies. Interim Staff Report. July 2024. ftc.gov
3. Commonwealth Fund. What Pharmacy Benefit Managers Do, and How They Contribute to Drug Spending. March 2025. Accessed May 2026. commonwealthfund.org
4. KFF. What to Know About Pharmacy Benefit Managers (PBMs) and Federal Efforts at Regulation. Updated February 9, 2026. Accessed May 2026. kff.org/other-health/what-to-know-about-pharmacy-benefit-managers-pbms-and-federal-efforts-at-regulation/
5. American Medical Association. What are pharmacy benefit managers (PBMs) and why we need reform? February 2026. Accessed May 2026. ama-assn.org
6. Consolidated Appropriations Act, 2026. H.R. 7148. Enacted February 3, 2026.
