Two services have gotten a lot of attention for helping Americans pay less for prescriptions: Mark Cuban's Cost Plus Drugs and GoodRx. Both can save you real money. But they work in fundamentally different ways, and they're best suited for different situations.
Understanding the business model behind each service — not just the prices — tells you which one to reach for, and when.
How Cost Plus Drugs Works
Cost Plus Drugs (costplusdrugs.com) is a mail-order pharmacy built on a simple, transparent pricing model. For each drug it carries, you pay the manufacturer's actual cost plus a 15% markup, plus a $5 pharmacy dispensing fee, plus $3 for shipping. That's it. No negotiation, no coupons, no insurance required.
This model is powerful precisely because it eliminates the layers of middlemen — pharmacy benefit managers, wholesalers, and insurance rebate arrangements — that inflate retail drug prices. For commodity generic drugs that have been off patent for years, manufacturing cost is very low. The Cost Plus markup on top of that is often a fraction of what the same drug costs at a retail pharmacy.
The key limitation of Cost Plus Drugs is that it is mail-order only, and its formulary — the list of drugs it carries — is primarily focused on generic medications. It covers many of the most commonly prescribed drugs, but it does not carry every medication, and it does not yet have broad specialty drug coverage.
How GoodRx Works
GoodRx is not a pharmacy. It's a discount card service that negotiates prices on your behalf with retail pharmacies. When you look up a drug on GoodRx, you see a pre-negotiated price that the pharmacy has agreed to honor when you present the coupon. GoodRx makes money by collecting a fee from the pharmacy on each transaction where its coupon is used.
The main advantage of GoodRx is breadth. It works at most major retail pharmacy chains — CVS, Walgreens, Walmart, Kroger, Costco, Rite Aid, Target, and many independents. You can fill your prescription today and pick it up in person. GoodRx also covers a much wider range of drugs, including brand-name medications and many specialty drugs.
The trade-off is that GoodRx prices are negotiated, not cost-based. For some drugs, the GoodRx price is very competitive. For others, it's less impressive. The prices also vary by location — the GoodRx price at a Walmart in one city may differ from the price at a Walmart in another city for the same drug.
Side-by-Side Comparison
| Feature | Cost Plus Drugs | GoodRx |
|---|---|---|
| Pricing model | Manufacturer cost + 15% + $5 fee + $3 shipping | Negotiated discount prices, varies by drug and pharmacy |
| Generic drugs | Often lowest available price Edge | Competitive, but typically higher than Cost Plus for generics |
| Brand-name drugs | Limited coverage; not a strength | Broader coverage Edge |
| Specialty drugs | Very limited | Broader coverage Edge |
| How you get the drug | Mail order only (typically 3–5 business days) | Retail pharmacy pickup Edge |
| Formulary size | Growing, primarily generics | Very broad Edge |
| Insurance accepted | Cash-pay only (no insurance billing) | Works alongside or instead of insurance |
| Price transparency | Fully transparent, formula-based Edge | Varies by location; check the app for your specific pharmacy |
When Cost Plus Drugs Wins
Cost Plus Drugs tends to offer the best price when all of the following are true:
- The drug is a generic (off patent, commodity manufacture)
- You take it regularly and can plan ahead for mail delivery
- The drug is on the Cost Plus formulary (check their website)
- You're paying cash — not running it through insurance
For long-term maintenance medications — drugs you take every day for years — the savings on Cost Plus generics can be substantial. Common examples include medications for blood pressure, cholesterol, diabetes, thyroid conditions, and many mental health conditions, most of which have been generic for many years and are inexpensive to manufacture.
When GoodRx Wins
GoodRx tends to be the better choice when:
- You need the prescription today and can't wait for mail delivery
- The drug is brand-name or a specialty medication
- The drug isn't on Cost Plus Drugs' formulary
- Your preferred pharmacy is nearby and on the GoodRx network
GoodRx is also useful as a quick comparison tool even when you intend to use insurance — sometimes the GoodRx cash price is lower than your insurance copay, particularly early in a plan year when you're still satisfying a deductible.
The Right Strategy: Check Both
The most effective approach is not to commit to one service, but to check both for any given prescription. The services are complementary, not competing. For your long-term generics, Cost Plus Drugs is typically the right anchor. For anything you need quickly, for brand-name drugs, or for drugs not on the Cost Plus formulary, GoodRx gives you broad retail coverage.
Neither service requires a subscription or membership to use their basic pricing. Looking up a drug on both sites before you fill takes about two minutes and can save you meaningfully on medications you'll be paying for over years or decades.
The Bottom Line
Cost Plus Drugs wins on commodity generics you take long-term. The transparent, formula-based pricing is often the lowest available for generic maintenance medications — and the savings compound over time.
GoodRx wins on breadth. It covers more drugs, works at retail pharmacies, and gives you same-day pickup. It's the better choice for brand-name drugs, specialty medications, and any prescription you need today.
Use both. Check both prices before filling any prescription. The two minutes it takes can save you a meaningful amount each month.
Frequently Asked Questions
Can I use Cost Plus Drugs if I have insurance?
Yes. Cost Plus Drugs is a cash-pay service, so you pay directly and do not run the purchase through insurance. For some generic drugs, the Cost Plus price is lower than your insurance copay, making it worth paying out of pocket. Your pharmacist cannot always tell you which is cheaper in advance, so it helps to check both before filling.
Does GoodRx work at all pharmacies?
GoodRx has agreements with most major retail pharmacy chains in the United States, including CVS, Walgreens, Walmart, Kroger, Costco, Rite Aid, and Target, as well as many independent pharmacies. Coverage varies by location. Always confirm the price shown in the app matches what the pharmacy charges before completing the transaction.
Which service is better for specialty or brand-name drugs?
GoodRx typically covers a broader range of brand-name and specialty drugs than Cost Plus Drugs. Cost Plus Drugs' formulary is primarily focused on generic medications and grows over time, but it does not yet cover the full range of specialty drugs. For brand-name or specialty prescriptions, check GoodRx first, and also check whether a manufacturer copay card is available.
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