The same peptide can vary 2–3× in price between labs. Here they are side by side, with availability at a glance. We only list vendors we’d point a friend to.
Checking for live vendor data.
No star ratings. We have not lab-tested any of these vendors, so any score we invented would be fiction dressed as research. What follows is only what this site can demonstrate: whether we read their public product API, when we last succeeded, how many listings we matched, and why a vendor is switched off when it is. Verify COAs, reviews, and legality yourself before buying anything.
See also: listings we refused to publish — the vendor products our identity guard rejected because they were a different compound than the one being searched for.
Prices come from each vendor’s own public product API
(WooCommerce Store API / Shopify product feed) — official, structured endpoints, not screen-scraping.
A small Node job reads them and writes assets/data/prices.json, which this page loads —
and re-checks every 10 minutes and whenever you come back to this tab, so an open page updates itself.
Refresh manually:
node scripts/refresh-prices.mjs ·
Add a vendor: node scripts/refresh-prices.mjs --probe theirdomain.com,
then enable it in scripts/vendors.mjs. A GitHub Action can run this on a schedule —
setup and the partner-terms caveats are in README.md.