Peptide price index.

The table above is a snapshot, not a live feed. We refresh it weekly by walking each vendor's catalog page manually and recording the standard single-vial listed price. Sale tiers, bulk discounts, and crypto-specific pricing are noted in the "Notes" column where they materially affect the comparison; they are not the headline figure.

How to read the per-mg column

The per-mg figure is computed as price ÷ vial mg. Use it as a relative comparator within a compound, not across compounds. Different compounds have different cost-of-synthesis profiles — comparing per-mg cost between retatrutide and BPC-157 is not meaningful, but comparing retatrutide between two vendors is.

What is and isn't included

• Included: the five vendors we maintain audit profiles for (Limitless Life, Particle Peptides, Ascension Peptides, Pure Rawz, Swiss Chems) and the six most-searched research compounds in the niche.
• Not included: vendors we do not yet audit; blends and stacks (priced separately by SKU); any vendor we have flagged as shutdown or under regulatory action (see /postmortems for the closed-vendor record).

Why these vendors, and not others

Vendor inclusion follows the audit cycle, not the price index. We add vendors to this page only after they appear as a preview or full audit profile under /vendors/. That keeps the price comparison anchored to vendors we have evaluated for COA practices, identity-confirmation methods, and shipping reliability — not just for cheapest cost.

What the cheapest-tag means

The arrow next to a per-mg figure marks the lowest-cost listing for that compound. It is not an endorsement. The cheapest vendor is sometimes also the vendor with the most friction (crypto-only payments, slower customer service, long-tail catalog inconsistency). Read the audit profile before ordering — link is in the vendor name column.

Updating cadence

Weekly refresh on the active vendor set. We log material price changes (more than 10% movement on any SKU) in the corrections-style format and flag them on the next refresh. Vendors update pricing without notice; the table is only as current as the date in the header.

Some of the "visit →" links on this page are cloaked affiliate redirects (/go/{vendor}) that earn vialaudit a commission when a reader clicks through and orders. Pricing in the table is not affected by affiliate status; we cite the vendor's listed price regardless of whether we earn from a referral. The audit findings on /vendors/ are independent of affiliate relationships, per our methodology.