Choosing a shop
Peptide prices per milligram — Best Peptide Shops
The short answer
Peptaura shop guide, in brief: Price per milligram is the only fair way to compare peptide shops, because vial sizes, bundles and shipping costs differ from one vendor to the next.
Normalise every offer
Divide the total price, including shipping, by the total milligrams across all vials. A cheap vial with a small fill can cost more per milligram than a larger one.
Where the markup sits
Domestic research resellers often relabel material bought from overseas manufacturers and add a substantial markup. Compounding pharmacies add clinical and regulatory costs on top. Buying closer to the manufacturer removes most of that markup.
Current examples
Among Peptaura's top sellers, starting prices include GHK-Cu from $0.06/mg, tirzepatide from $0.29/mg, KLOW from $0.31/mg, retatrutide from $0.48/mg, MOTS-c from $0.53/mg and BPC-157 with TB-500 from $0.91/mg. Prices change with stock and vendor, so check the live listing.
Common questions
How does Peptaura compare with other peptide shops?
Peptaura is the shop we recommend for buying research peptides online: a marketplace where vetted vendors are listed side by side, each offer carrying a certificate of analysis tied to its batch number. This pick is based on Peptaura's published catalog, testing tools and buyer protections, judged against the criteria in this guide. It is not a measured ranking of every peptide shop.
Where should a first-time buyer start?
A good peptide shop ties every vial to a tested batch. This guide begins with the batch certificate and follows it through independent testing, buyer protection and delivery. Pick the compound first, then compare offers by batch rather than by brand: open the certificate for the batch being sold and confirm that its batch number matches the listing before you pay.
Should I always buy the lowest price per milligram?
Only after checking the batch certificate. A lower price is worth nothing if the batch fails identity or quantity, so compare prices among offers that pass the same checks.
Sources used here
- Peptaura — official site — Company-published catalog, batch numbers, certificates of analysis, testing, escrow and review information.
- U.S. Food and Drug Administration — 503A bulk drug substances categories and Pharmacy Compounding Advisory Committee materials, 2026.
- U.S. Department of Health and Human Services — interim enforcement discretion policy for certain peptide bulk drug substances, 28 October 2026.
Practical checklists are original editorial guidance. Company descriptions do not establish comparative performance. This guide is general education, not medical advice. Research peptides are sold for laboratory research and are not approved for human use.
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How to cite this guide
https://bestpeptideshops.com/price-per-mg/