Cost Plus Drugs is the pharmacy Mark Cuban launched in 2022 to do one thing: prove that generic drugs in America are massively overpriced because of pharmacy benefit manager (PBM) spread pricing.01 The pitch is brutally simple, they show you the manufacturer's actual cost, add 15%, add a $5 pharmacy fee, add shipping, and that's your price. No middlemen.
For many common generics, Cost Plus lists 30 tablets at about $5 to $6 including its fee, before shipping; set that against your own copay. We read Cost Plus's published prices for common generics and set them against Walmart's prescription program list and Amazon RxPass.02 On the eight common generics in the table below, Cost Plus's listed price is lower than Walmart's program price on every drug both list, before shipping. Walmart's current list (effective March 24, 2025) has no antibiotics, and its only statin, simvastatin, is in the $9 tier.
The strongest single play for multi-prescription cash-pay patients.
Lowest listed price on the common generics compared here, before shipping. Loses to Walmart's $4 tier where a drug is on it (hydrochlorothiazide 25mg: $4 at Walmart, $5.25 at Cost Plus) and to insurance on $0-copay tier-1 generics. If you take 2+ chronic-condition generics and pay cash, Cost Plus is almost certainly your cheapest option.
01 / 06Who Cost Plus is actually for
If you take generic medications and pay cash (uninsured, high-deductible, or your copay is over $10), Cost Plus is almost certainly your cheapest option. The math gets more lopsided with each chronic-condition generic you add, because each one is priced the same way.
02 / 06Cost Plus vs Amazon RxPass
The honest comparison: Cost Plus isn't the only "mail-order generics at near-cost" play. The strongest alternative is Amazon Pharmacy's RxPass program, a $5/month flat subscription for unlimited eligible generics, restricted to Prime members.03 We compared their published pricing head-to-head.
- 2,300+ generic listings in catalog
- Per-drug pricing, no subscription
- $5 fee per drug, plus shipping
- 5-10 day delivery
- Brand-name drugs limited
- ~60 eligible generics only
- Flat $5/mo for ALL covered drugs
- Requires Prime ($139/yr)
- 2-5 day delivery
- No brand-name coverage
You are either renting, insured, or direct-paying.
| Approach | Per month | 2-year cost |
|---|---|---|
| Insurance copay (BCBS standard)3 generics @ tier-1 copay | $45 | $1,080 |
| Amazon RxPass$5/mo subscription | $5 | $120 |
| Cost Plus Drugs3 generics at about $5.50 each incl. $5 fee, + $5.25 shipping | $22 | $528 |
The headline finding: Amazon RxPass is technically cheaper than Cost Plus if all three of your drugs are on RxPass's ~60-drug eligible list AND you already pay for Prime. The catch is the eligibility list is narrow, newer generics, post-2020 patent expirations, and most psychiatric/cardiology niche generics aren't covered.03 If even one of your three drugs falls off the list, Cost Plus pulls ahead.
The dirty secret of generic pricing is that the spread between what two pharmacies charge for the identical generic is usually larger than the drug itself. Everything above acquisition cost is markup, PBM spread, or insurance theater. RxGrab, on the price gaps compared below
03 / 06The full price comparison
Below are eight common generics at the prices each program publishes, read on October 13, 2026 from the Cost Plus pricing API, Walmart's prescription program list (effective March 24, 2025) and Amazon's RxPass list.05 Cost Plus prices include its $5 dispensing fee; standard shipping adds $5.25. RxPass is $5 a month for all eligible drugs and requires Prime. Our wider method is on the methodology page.
| Drug | Cost Plus (30 ct, incl. $5 fee) | Walmart program (30-day) | Amazon RxPass |
|---|---|---|---|
| Atorvastatin 20mg | $5.41 | Not listed | Eligible |
| Lisinopril 20mg | $5.56 | $9 | Eligible |
| Metformin 1000mg | $5.57 | $9 (60 tablets) | Not listed |
| Sertraline 100mg | $6.04 | $9 | Eligible |
| Tadalafil 5mg (90 ct) | $7.93 | Not listed | Not listed |
| Imatinib 400mg (cancer) | $34.50 | Not listed | Not listed |
| Amoxicillin 500mg capsule (30 ct) | $6.72 | Not listed | Eligible |
| Atomoxetine 40mg (ADHD) | $10.87 | Not listed | Not listed |
The imatinib row is the headline: Cost Plus lists generic imatinib 400mg, the generic of Gleevec, a chronic myeloid leukemia drug, at $34.50 for 30 tablets including its $5 dispensing fee, as of October 2026.02 This is the story Cost Plus was built to tell.
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04 / 06Where Cost Plus actually loses
Cost Plus adds a $5 dispensing fee to each medication (it is already inside the listed price) and $5.25 for standard shipping. A single 30-day atorvastatin 20mg order therefore comes to $10.66 delivered, as of October 2026. Walmart's program list does not include atorvastatin; for the drugs it does list, the 30-day price is $4 or $9 depending on the tier.
Insurance billing is limited to the plans Cost Plus works with; if yours is not one, Cost Plus will not run the claim. You can submit receipts to your HSA or FSA, but you can't apply the spend toward your deductible. For patients with low-copay insurance, Cost Plus is a net loss.
Four criteria, weighted, published.
Every pharmacy and discount program is scored 1 to 10 on four criteria from our research data, then weighted into one composite score. The weights are fixed and the same for every option. Read the full methodology →
Price competitiveness, 40%
Savings across a basket of 20 commonly prescribed generics against the national average cash price.
Drug coverage breadth, 25%
How many medications are covered, including maintenance, specialty and controlled drugs.
Accessibility, 20%
Geographic availability, pharmacy network, online ordering and ease of sign-up.
Transparency, 15%
Prices listed before purchase, a disclosed business model and consistent pricing across locations.