How We Make Money
Last updated July 23, 2026
Today: one affiliate relationship
- Chewy — a supplies retailer, not a tracked vendor. As of July 23, 2026 we participate in Chewy's affiliate program. Chewy sells aquarium supplies — salt mixes, test kits, food — and does not sell live coral or marine fish, so it never appears in the price tables, the vendor counts, or any ranking on this site. Where a species page suggests supplies, those Chewy links carry a referral tag: if you buy something after clicking one, Chewy pays us a small commission (currently 1% of the sale) at no extra cost to you. Prices on their site are the same either way. Every page carrying these links carries a disclosure note above them.
- No payments from any vendor in the index. None of the reef vendors whose prices we track pay us anything, and none of their listing links carry referral tags — they are plain links.
- No ads. There is no advertising anywhere on the site. (We have applied to an ad network; if ads are ever added, this page and the privacy policy will be updated before they appear.)
What might change
To keep the site running long-term, we may eventually introduce clearly marked advertising and/or additional affiliate links. If that happens, they will be disclosed as such, and this page will be updated first — before any of it goes live — so it always describes how the site actually earns money.
Our commitments
These hold today and will keep holding as anything above changes:
- Money never touches the data. No paid relationship will ever affect the prices we show, how species are ranked or sorted, or which vendors appear in the index.
- All vendors get identical treatment, whether or not they ever pay us anything. A vendor cannot buy a better position or remove an unflattering price.
- Accuracy comes first. The entire value of a price index is that it's honest. If a revenue idea would compromise the data, we won't do it.
How the numbers themselves are collected and computed is documented on the methodology page. What data we collect about visitors (very little) is on the privacy policy. Questions: [email protected].