Price per milligram: how to compare peptide offers fairly
A vial priced at 90 euro can be more expensive than a pen priced at 250. That sounds impossible until you work out the price per milligram. Most suppliers leave that column out, and it is not an accident. On our catalogue we print it as standard, including where it works against us.
The arithmetic, with real numbers
Take retatrutide, which we stock in four formats. The number at the front tells you nothing until you know how much material you get.
| Format | Price | Per milligram |
|---|---|---|
| Retatrutide 10 mg vial | € 90,00 | € 9,00 |
| Retatrutide 20 mg vial | € 170,00 | € 8,50 |
| Retatrutide 20 mg pen | € 200,00 | € 10,00 |
| Retatrutide 40 mg pen | € 250,00 | € 6,25 |
The dearest row is the cheapest one. Anyone going by the front price picks the 90 euro vial and pays 44 percent more per milligram than someone who reads the last column. All four are on buy retatrutide.
Why bigger formats fall per milligram
Filling a vial, sealing it, assigning a batch number and shipping it cold costs roughly the same whether it holds 10 or 80 milligrams. Those fixed costs spread across more material in a larger format. It is not generosity, it is arithmetic.
The sharpest example in our catalogue is GHK-Cu at 0,90 euro per milligram, simply because a vial holds 100 mg.
Where the sum does not apply
Two products in our catalogue carry no price per milligram, and that is deliberate. Gonadotropins are dosed on biological activity in international units, not on mass. Two preparations of identical weight can differ in potency, so a price per milligram would mislead.
The trap in cheap
A low price per milligram means something only if the material is what it claims to be. A supplier without a certificate per batch, or with an HPLC result and no mass spectrometry, can print any number. Work out the arithmetic once you know what you are comparing.
Frequently asked questions
Why is a pen sometimes cheaper per milligram than a vial?
Because format outweighs form. The 40 mg pen holds four times the material of the smallest vial while the fixed costs per unit are comparable.
Which product is cheapest per milligram?
GHK-Cu at 0,90 euro per milligram across a 100 mg vial.
Why is there no price per milligram on HCG?
Gonadotropins are dosed on biological activity in international units, not on mass.
Does a lower price per milligram always mean a better buy?
Only if the documentation holds up. Without a certificate per batch and verification by two independent methods the number means nothing.
Ordering and paying within the EU
We ship from within the EU with cold chain, so no customs clearance and no import duty. That is not a formality: lyophilised peptide tolerates heat poorly, and a customs depot is not a cold room. The full catalogue with the price per milligram is on Buy peptides in Europe.
Quality criteria for research grade
The difference between suppliers lies in what they can demonstrate, not what they claim. A certificate tied to your batch number rather than a product page. Two independent methods: HPLC for purity, mass spectrometry for identity. Karl Fischer titration for water content, which determines how long the powder stays stable. And a cold chain that matches the distance.
Paying at Chempeptides
You complete your order first, then reach a secure payment page with the exact amount and your order number. There you choose Wero, credit card, Apple Pay or Google Pay. Which methods appear depends on the country you pay from. No card number is entered on our site.
In closing
The number at the front tells you what you pay. The price per milligram tells you what you get. As long as a supplier omits the second column, you cannot compare their offer with anyone else.
Research disclaimer▾
Alle informatie op deze pagina is bedoeld voor laboratoriumonderzoek en in-vitro studies. Geen humane consumptie. Geen medische claims. Producten zijn niet goedgekeurd door EMA of FDA voor therapeutisch gebruik.