Almost every pharmacy in America treats its cash price as a trade secret. Mark Cuban Cost Plus Drug Company does the opposite: it publishes the formula, publishes the input costs, and lets you check the arithmetic on every product page. That single design choice is why the company is worth understanding even if you never order from it, because it gives cash payers a public yardstick for what a generic prescription should actually cost.
This guide prices a basket of the most commonly filled generics at Cost Plus, sets each one against the federal government’s own measure of what pharmacies pay wholesale, and compares them to two named retail channels. Every figure below was read on September 4, 2026.
What Does Cost Plus Drugs Cost Without Insurance?
Cost Plus prices come from the company’s live medication pages. Acquisition costs come from the CMS National Average Drug Acquisition Cost survey, the federal benchmark for what U.S. retail pharmacies actually pay for a drug, effective August 19 to September 2, 2026 depending on the product. Amazon Pharmacy figures come from its own product pages, and the Walmart tiers come from Walmart’s Prescription Program document effective 03/24/2025.
| Option | Low | Average | High |
|---|---|---|---|
| CMS NADAC acquisition cost, 30 tablets of a common generic | $0.45 (amlodipine 10 mg) | $0.83 (omeprazole DR 20 mg) | $1.51 (sertraline 100 mg) |
| Cost Plus Drugs, 30 tablets, before shipping | $5.21 (amlodipine 5 mg) | $5.79 (losartan 100 mg) | $6.24 (escitalopram 10 mg) |
| Cost Plus Drugs, 30 tablets, with $5.25 shipping added | $10.46 | $11.04 | $11.49 |
| Amazon Pharmacy price with Prime, 30 tablets | $5.90 (lisinopril 10 mg) | $8.90 (amlodipine 10 mg) | $9.80 (omeprazole DR 20 mg) |
| Amazon Pharmacy stated retail price, 30 tablets | $24.00 (lisinopril 10 mg) | $74.40 (losartan 100 mg) | $125.70 (escitalopram 10 mg) |
| Walmart Prescription Program, 30-day supply, listed drugs only | $4.00 | $9.00 | $15.00 |
| Cost Plus Drugs, imatinib 400 mg, 30 tablets | $34.50 | $34.50 | $34.50 |
| CMS NADAC acquisition cost, imatinib 400 mg, 30 tablets | $86.29 | $86.29 | $86.29 |
| Cost Plus stated retail comparison, imatinib 400 mg, 30 tablets | $9,657.30 | $9,657.30 | $9,657.30 |
Here is the same basket drug by drug, each one a 30-count supply read from the Cost Plus medication page on September 4, 2026, with the CMS acquisition cost for the same 30 tablets in parentheses:
- Amlodipine 5 mg: $5.21 ($0.30)
- Atorvastatin 10 mg: $5.25 ($0.70)
- Amlodipine 10 mg: $5.31 ($0.45)
- Metformin 500 mg: $5.31 ($0.43)
- Lisinopril 10 mg: $5.38 ($0.55)
- Losartan 50 mg: $5.52 ($0.97)
- Sertraline 50 mg: $5.69 ($1.03)
- Montelukast 10 mg: $5.71 ($1.25)
- Losartan 100 mg: $5.79 ($1.32)
- Levothyroxine 50 mcg: $5.93 ($1.22)
- Omeprazole DR 20 mg: $5.93 ($0.83)
- Sertraline 100 mg: $6.04 ($1.51)
- Escitalopram 10 mg: $6.24 ($1.18)
Add $5.25 for shipping and every one of those lands between $10.46 and $11.49 delivered. That is the honest answer to “how much are Mark Cuban pharmacy prices” for ordinary maintenance generics: a shade over ten dollars a month, with the drug itself accounting for well under a tenth of it.
What Drives the Price
The formula is four line items, and two of them are fixed
Cost Plus publishes the breakdown on its mission page. For imatinib 400 mg it shows manufacturing $25.65, a 15% markup of $3.85, and pharmacy labor of $5.00, totalling the $34.50 price shown for 30 tablets, with standard shipping of $5.25 listed separately as an additional cost at checkout. The 15% is the company’s entire gross margin. The $5.00 and the $5.25 do not move with the drug.
On cheap generics, the fees are the whole price
Run the formula backwards and the picture gets stark. Atorvastatin 10 mg sells for $5.25 per 30 tablets, so after subtracting the $5.00 labor fee and dividing out the 15% markup, Cost Plus paid roughly $0.22 for the month’s supply. The medicine is about 4% of what you pay. For lisinopril 10 mg at $5.38 the drug is about $0.33. Anyone comparing pharmacies on a $4 generic is comparing dispensing fees, not medicine.
On expensive generics, the formula is a wrecking ball
Imatinib is the case that made the company famous and it still holds up. Cost Plus paid $25.65 for 30 of the 400 mg tablets, which is $0.855 each. The CMS national acquisition benchmark for the same tablet is $2.87642, effective August 19, 2026. Cost Plus is buying it for roughly 30 cents on the dollar against what the average American pharmacy pays, then adding 15%. That is how a $34.50 price sits next to a $9,657.30 retail comparison on the same page.
Quantity and order batching change the effective price
Because the $5.00 labor fee is charged per prescription filled and the $5.25 shipping is charged once per order rather than per medication, the per-month cost falls fast as you consolidate. Three maintenance drugs ordered together carry one $5.25 shipping charge instead of three. A 90-day fill spreads a single labor fee across three months.
The catalog is limited, and slugs are not guessable
Cost Plus’s own FAQ states plainly that it carries only a set list of medications. Controlled substances, most brand-name drugs, refrigerated products and anything requiring specialty handling are largely absent. Check the medication list before you ask a prescriber to redirect a prescription.
Cash Price vs. Insurance
Cost Plus is a cash pharmacy for most people. Its FAQ names a specific set of prescription plans it accepts, including AffirmedRx, Capital Blue Cross, Prescryptive, SelectHealth, SmithRx, TrueScripts and WellDyne, and says more are being added. If your plan is not on that list, buying here means not using your benefit at all, and the purchase will not count toward your deductible.
That trade is often worth making, and there is now good evidence about when. A study published in the Annals of Internal Medicine on May 26, 2026, led by researchers at the University of Texas MD Anderson Cancer Center and summarized by Penn’s Leonard Davis Institute, compared more than 62 million 2024 commercial prescription claims against Cost Plus cash prices including the $5.25 shipping fee. Below about $15 out of pocket, insurance usually won and the savings were modest. Above $15, the Cost Plus price was cheaper nearly 80% of the time. Among patients paying more than $100 out of pocket, the typical case was about $140 through insurance versus about $25 at Cost Plus.
The practical rule that falls out of that: if your generic copay is a few dollars, keep using your plan. If your pharmacy is quoting you $20 or more for a generic, price it at Cost Plus before you pay.
How to Pay Less
Batch every prescription into one order. Shipping is $5.25 per order, not per drug. Three medications in one order costs $5.25 to ship; three separate orders cost $15.75. This is the single easiest saving available and the company says so on its own site.
Ask for a 90-day prescription. The $5.00 pharmacy labor fee is charged on each fill. Moving from monthly to quarterly fills cuts that fee by two-thirds per month and cuts shipping charges the same way.
Price the same drug at two or three cash channels before you commit. For the basket above, Amazon Pharmacy’s price with a Prime membership ran $5.90 to $9.80 for the same 30 tablets, and Walmart’s program covers lisinopril, losartan, amlodipine, metformin and sertraline at $9 for 30 days and levothyroxine at $4, though its list carries no atorvastatin, escitalopram, omeprazole or montelukast at any tier. Our comparisons of Amazon Pharmacy prices, Walmart pharmacy prices, Costco pharmacy prices and CVS pharmacy prices run the same drugs through each channel, and the fair price checker will show you the range for a given medication.
Check a discount card against the Cost Plus price for a single fill. Cards can beat Cost Plus on a one-off antibiotic where shipping time matters and the $5.25 does not amortize. Our guide to GoodRx versus SingleCare covers how those prices are set, and the GoodRx cost breakdown explains what the free card and the paid tier each do.
Do not buy what you can get free. Federally qualified health centers and sliding-scale clinics dispense many of these same generics at income-based prices, and several run their own in-house pharmacies. See free and sliding-scale clinics for how to find one near you.
If a pharmacy bill has already gone wrong, treat it like any other medical bill. Charges you have already incurred are negotiable more often than people assume. Our guide to negotiating medical bills covers the scripts that work.
Is Cost Plus Drugs Legitimate?
It is a real, licensed dispensing operation, not a coupon site. The company is a public-benefit corporation, and its FAQ states that prescriptions are filled by HealthDyne, its fulfillment partner, using accredited pharmacies and licensed pharmacists available 24 hours a day. Orders require a prescription transmitted by your prescriber to the company’s pharmacy, and there is no way to buy around that.
The limitations are practical rather than regulatory. It is mail order, so it does not work for a same-day antibiotic. The catalog does not cover controlled substances or most brands. And you have to ask your own prescriber to route the prescription, which is friction the company deliberately keeps in place to hold prices down.
The Bottom Line
For ordinary maintenance generics, Cost Plus lands almost every drug between $10 and $12 delivered for a 30-day supply, and the price is dominated by two fixed fees rather than by the medicine. That makes it very good and very predictable, but not automatically the cheapest: a $4 or $9 chain program can beat it on a single common drug, and a discount card sometimes will too.
Where Cost Plus is hard to beat is the expensive generic, the one where a counter quote runs into the hundreds or thousands. There the published formula does something no coupon does, and the imatinib line, $34.50 against a $9,657.30 comparison, is the proof. If you take a specialty generic and you are paying cash, price it here first. For the everyday drugs, check metformin, atorvastatin, lisinopril, sertraline and levothyroxine across all the cash channels before you settle.