Price per milligram is the only fair way to compare peptide prices. A $30 vial with 5mg is more expensive than a $50 vial with 10mg. We analyzed over 1,600 products across 20 vendors to find the cheapest research peptides available.
Cheapest Peptides by Compound (March 2026)
| Compound | Cheapest Vendor | Price/mg | Runner Up | Price/mg |
|---|---|---|---|---|
| BPC-157 | Soma Chems | $3.00 | Paradigm Peptides | $4.00 |
| Semaglutide | Paradigm Peptides | $3.00 | Soma Chems | $3.60 |
| TB-500 | Astro Peptides | $5.00 | Paradigm Peptides | $6.50 |
| GHK-Cu | Paradigm Peptides | $0.26 | Peptide Crafters | $0.50 |
| PT-141 | Pure Rawz | $3.70 | Peptide Crafters | $4.00 |
| CJC-1295 | Polaris Peptides | $5.00 | Peptide Crafters | $5.60 |
| Ipamorelin | Paradigm Peptides | $3.60 | Core Peptides | $4.00 |
| Selank | Paradigm Peptides | $5.00 | Polaris Peptides | $5.50 |
| MOTS-c | Paradigm Peptides | $3.50 | Astro Peptides | $5.00 |
| Sermorelin | Paradigm Peptides | $5.00 | Swiss Chems | $6.00 |
Prices from our database, updated weekly. See individual [compound pages](/compounds) for full vendor breakdowns.
Budget Vendors — Best Overall Value
Some vendors consistently appear as the cheapest across multiple compounds:
Paradigm Peptides
Appears as the cheapest or runner-up for 7 out of 10 top compounds. Finnrick A-rated. Prices are aggressive, particularly on trending compounds like semaglutide ($3.00/mg) and GHK-Cu ($0.26/mg).
Soma Chems
Budget leader for BPC-157 and consistently competitive across the catalog. Purity score of 9.0 in our system. Price score: 9.8/10.
Pure Rawz
Highest price score (10.0) in our entire database. They may not be the absolute cheapest on every compound, but their median price per mg is the lowest across all products.
Cheap vs. Good: Does Low Price Mean Low Quality?
Not necessarily. Our data shows no strong correlation between price and purity. Several budget vendors carry Finnrick A ratings (independently verified high purity):
- •Paradigm Peptides — Cheapest on many compounds, Finnrick A
- •Polaris Peptides — Competitive pricing, Finnrick A
- •Peptide Crafters — Mid-range pricing, Finnrick A
The vendors charging the highest prices (Peptide Sciences, Apollo Peptide Sciences) don't necessarily have higher purity — they have more established brands and larger operations.
How We Calculate Price per mg
Our price comparison normalizes everything to price per milligram of active peptide:
- 1.We scrape the listed price from the vendor's website
- 2.We extract the mg amount from the product name
- 3.Price ÷ mg = price per mg
This makes comparisons fair across different vial sizes (5mg, 10mg, 30mg etc.) and different vendors.
When Cheap Isn't Worth It
Be cautious of peptide prices that are dramatically below the market. If a vendor sells semaglutide at $1/mg when the market average is $5/mg, that's a red flag — the product may be underdosed, impure, or counterfeit.
Our scoring system accounts for this: vendors need good scores across purity AND pricing to rank well. A vendor with great prices but no COA documentation will score poorly overall.
Browse all vendors sorted by price score on our [vendor rankings page](/vendors).
For research use only. Not for human consumption. Affiliate links may be present.