Price transparency index
70% of the prices on this market are not the price
We read 248 price rows off 77 sellers’ own pages. On 174 of them, the number the seller leads with is lower than the number it bills once any intro period ends. The middle of that gap is $99 a month.
Counted from every published review on this site, not a sample. Each figure carries the seller’s own page it was read from and the date it was read.
174
Rows that rise
$99
Median gap
8.05×
Largest multiple
248/248
Rows with a source
The count
What the 248 rows do
174
advertise less than they bill
The headline figure is an intro, a prepay tier, or a first-month rate. Median 1.57× the advertised number by the time it settles; the widest row on the site is 8.05×. Spread across 62 of the 77 sellers.
74
charge what they advertise
The advertised figure is the figure billed in month two, with no step-up to find. These sit on 15 sellers, and they are the only rows on this site where the homepage number can be compared with another homepage number directly.
The other gap
48 rows bill more than twelve times a year
A price written “/mo” invites twelve multiplications. 58 of the 248 rows here are not billed on a calendar month at all, and 48 of those bill more often than twelve times a year across 18 sellers — a whole extra charge inside a year the “/mo” figure prices at twelve. Every year total on this site is computed from the cycle below rather than from twelve.
| Billing cycle | Charges a year | Rows | Sellers | Against twelve |
|---|---|---|---|---|
| Monthly | 12 | 190 | 61 | Twelve |
| Every 4 weeks | 13 | 45 | 16 | More than twelve |
| Every 12 weeks | 4.33 | 4 | 1 | Fewer than twelve |
| Every 6 months | 2 | 3 | 1 | Fewer than twelve |
| Every 10 weeks | 5.2 | 3 | 1 | Fewer than twelve |
| Every 3 weeks | 17.33 | 2 | 1 | More than twelve |
| Every 30 days | 12.17 | 1 | 1 | More than twelve |
Every row on this site records how its cycle was established — a stated billing interval, a fixed supply length, the seller’s own terms, or a fixed course. A row where only a shipping cadence is published fails the build rather than being filed as monthly.
Method
How each price was classified
Two figures are recorded for every row. The advertised figure is the number the seller leads with on its own pricing or checkout page — usually the cheapest tier it will sell you, often conditional on prepaying for three, six or twelve months. The walk-away figure is what the same seller bills per cycle if you stop after one. A row is counted in the 174 above when the second is larger than the first.
Nothing here comes from an aggregator, a press release or a third-party price feed. All 248 rows carry the URL of the seller’s own page and the date that page was read, between August 2026 and August 2026. The full working for any single row is on that seller’s review, and the same rows drive every price board on the site.
Reuse
Cite this dataset
These 248 observations are published under CC BY 4.0. Republish any figure on this page, with attribution. If you are quoting a single price rather than the index, cite that seller’s review page instead — it carries the source URL and the date behind that one number.
Suggested citation
Doseworth, "Doseworth GLP-1 and peptide price-transparency index", https://doseworth.com/price-transparency (248 rows, verified 2026-08-07 to 2026-08-14).
The rows
Where these numbers come from
Every figure counted here is visible in context somewhere else on this site. The 77 reviews each show one seller’s rows with the working behind them. The price boards sort the same rows by what a year actually costs. The methodology sets out how a price is captured and the capture errors it is written to catch.