Why We Built PeptidePrices

PeptidePrices is an independent project. We are not a peptide vendor, not owned by a peptide vendor, and not operated in partnership with any vendor. We accept no vendor-controlled editorial agreements. Commercial relationships never give a vendor approval rights over our reviews or quality scores.

Affiliate disclosure: Some outbound vendor links on this site are affiliate links, which means we may earn a small commission on qualifying purchases at no extra cost to you. These commissions help fund ongoing price monitoring, COA verification, and site infrastructure.

How we handle partner evidence. A commercial relationship can make it easier to request documentation, but only independently verifiable evidence counts in the score. Private claims, commission performance, and affiliate-program operations do not count. Non-partners are not penalized for giving us less access. The same rubric is published publicly and applied to every vendor.

The site is run by a small team with backgrounds in software engineering and longevity research. Our goal is a pricing and quality resource we'd want to rely on ourselves — accurate, independent, and free of vendor influence.

Questions about who we are or how we operate? Email support@peptideprices.net directly. We reply to every message.

Every vendor on this site is scored on a published 1–10 rubric. The rubric is weighted:

• 40% — COA practices: named third-party lab (Janoshik, Colmaric, Vanguard, Freedom Diagnostics, etc.), batch linkage between vial and COA, public availability, testing breadth (purity, identity, endotoxin, sterility, heavy metals), independent verifiability.
• 20% — Community reputation: Trustpilot star rating weighted by review volume, Reddit and forum sentiment on r/Peptides, r/Biohackers, and Longecity, and any documented red flags.
• 20% — Transparency: physical address, company age, ownership disclosure, contact information, return policy clarity.
• 20% — Operations: shipping speed, customer service responsiveness, payment flexibility (credit card support), and dispute handling.

See the full methodology page for the complete scoring breakdown. Every vendor has an individual detail page with its COA status, curated reviews, and trust signals. We manually verify COA batch IDs against the claimed lab when possible and flag documented mismatches publicly (for example, the Onyx Research COA integrity failure on /is-legit/onyx-research).

Vendor prices are collected by automated scrapers that hit each vendor's public product catalog on a recurring schedule. Where available, we use public storefront endpoints; for other vendors we read public product-category pages. No authenticated endpoints — we read the same listings you would see by visiting the site.

Prices are normalized to a 10mg-equivalent basis so you can compare apples to apples. A 5mg vial at $30 and a 10mg vial at $55 become $60 and $55 per 10mg before ranking. The comparison table shows both the actual vial price and the normalized figure.

Every listing has a "last checked" timestamp. If stock status appears stale, we mark it. Vendors change prices and go out of stock without warning — we recommend verifying with the vendor's site before placing an order. We link directly to the product page to make this easy.

We are upfront about this because opacity is the industry's biggest trust problem, and we don't want to participate in it.

Affiliate links. Some vendor "Buy →" buttons include an affiliate tag. If you purchase through one, we may receive a small commission at no additional cost to you. This is the primary way we plan to fund server costs and the manual vetting work behind the site.

What affiliate relationships do NOT do:

• They do not affect quality ratings. Onyx Research has an affiliate program. We rate them 3/10 because they have documented COA integrity problems.
• They do not affect vendor ordering on the comparison table. The cheapest legitimate vendor wins the top row, every time.
• Partner offers may appear in clearly labeled coupon areas or the optional "Discount Code" sort. Those commercial placements are separate from the default quality and price rankings.
• They do not affect which vendors are listed. We list vendors based on community presence and product availability, not on who pays us.
• Vendors cannot pay to be added, removed, or ranked higher. We have refused this.

Accessory shop. We sell peptide research accessories (bacteriostatic water, syringes, alcohol wipes, mini fridges) at wholesale-plus margins. These products are sourced from medical supply distributors, not peptide vendors — so there is no conflict of interest with pricing rankings.

What we do NOT do:

• We do not take sponsorship payments from peptide vendors.
• No vendor can buy a score. Any COA or verification badge reflects published evidence criteria and does not change ranking by itself.
• We do not sell user data, email lists, or analytics data to any third party.
• We do not publish paid reviews or sponsored comparisons.

We will get things wrong. Prices drift, COAs get updated, vendors change ownership. When we get feedback that something is incorrect, we review it and update the page as soon as we can verify the correction.

If you spot a wrong price, a broken COA link, a review that should be removed, or a vendor that should be flagged:

• Use the "Report" link on any comparison table row to flag a bad listing (wrong price, out of stock, suspicious). Goes directly to our review queue.
• Email support@peptideprices.net for anything else — vendor concerns, rating disputes, data corrections, press inquiries.
• Submit a vendor review directly on the vendor detail page. All user-submitted reviews go through manual moderation before being published.

PeptidePrices is a research tool. Compounds listed on this site are sold and discussed as research chemicals — they are not for human consumption. Nothing on this site is medical advice, clinical guidance, or a product recommendation.

Consult a licensed physician before using any peptide product. Comply with all applicable laws in your jurisdiction — see our legality map for country-by-country status. Our terms of service and privacy policy apply to all use of this site.