Why sticker price lies#
A hypothetical $40 vial isn't automatically a better deal than a hypothetical $60 vial. What matters is how much actual compound you get — measured in milligrams (mg). Two listings for the same peptide can differ several times over in real value once you account for vial size.
Cost per mg, explained#
Cost per mg = price ÷ total milligrams in the vial.
Take two hypothetical listings for the same peptide (made-up numbers, not any vendor's real price):
- A 5 mg vial at $40 → $8.00 / mg
- A 10 mg vial at $60 → $6.00 / mg
The "more expensive" $60 vial is actually the better deal. Cost-per-mg normalizes price across different vial sizes so you compare apples to apples.
How to use it#
- Find the peptide you want.
- Sort listings by lowest cost / mg.
- Check stock and vendor before deciding.
Every listing on PEPTIDES·INDEX shows cost-per-mg automatically, so you never have to do the math.
To see it on real, current listings, here is the live table for BPC-157, ranked by cost per mg:
What about blends?#
For blends, total mg is the sum of all components in the vial — so cost-per-mg still works, it just reflects the combined compound.
Prices are aggregated for research-use comparison only and can change at any time.