How we source, verify, and retire every price.

We use published, checkable sources: manufacturer list prices and savings-program pages, pharmacy-published cash prices, publicly posted clinic or program pricing, and official government or payer publications.

We do not publish prices sourced from anonymous tips, screenshots we cannot verify, or figures a partner asks us to display.

• The source URL and the organisation that published it
• The date the price was verified, and who verified it
• The price type — list, cash, advertised, savings-program, or negotiated
• Conditions attached: eligibility, quantity, duration, or payment method
• An expiry window, where the source states or implies one

Entries are re-checked on a schedule appropriate to how quickly that price type moves. When an entry passes its verification window it is flagged as unverified or removed — it is never displayed as if it were still current.

Comparisons are normalised to a stated unit and time period so the figures are genuinely comparable, and we show the conditions next to the number rather than in small print. Where two prices are not comparable, we say so instead of ranking them.

We do not model or display an estimate of what an individual will personally pay, because that depends on clinical and coverage factors we do not collect. We do not publish clinical eligibility criteria, dosing guidance, or treatment recommendations.

If a figure is wrong, we correct the page, note what changed, and date the correction. Report anything that looks off and we will respond.