How to compare wholesale peptide prices

A per-vial price only compares two suppliers when the vials hold the same milligrams of the same compound. Put every quote on one basis, price per milligram, then account for what the label leaves out: salt form, testing, freight and minimums.

Price per mg: the one number to compare

Divide the price by the milligrams it buys. For a kit, that is the kit price divided by the milligrams in the kit: the number of vials times the labeled mg per vial. Kits here hold 10 vials, so a kit of 10 mg vials holds 100 mg, and a kit priced at $50.00 (an illustrative figure, not our price) works out to $0.50 per mg. For a single vial, divide the vial price by its labeled mg.

Price per mg turns different vial sizes, kit sizes and pack counts into one figure for the same compound. Our price per mg table does the division for every single-compound kit with a confirmed vial size, at all three pricing tiers.

Why per-vial prices mislead

• Different vial sizes. A 5 mg vial at $30.00 looks cheaper than a 10 mg vial at $50.00 (illustrative figures, not our prices), but it costs $6.00 per mg against $5.00.
• Different pack counts. A kit of ten vials, a box of five and a single vial can't be compared per pack. Divide each by the total milligrams it holds.
• List prices. A retail list price, or a discount taken off one, says nothing about what a wholesale buyer is invoiced. Compare invoiced prices only.
• Prices with conditions. A price that needs a coupon, or applies only above a quantity you won't order, is not your price.

Compare like with like

Price per mg only means something across the same product. Before comparing two quotes, check four things:

• The same molecule. Some trade names cover more than one sequence, or a fragment of a longer peptide. Check the sequence and molecular weight against a reference such as our molecular weight table; how to read a peptide sequence explains the notation.
• The same form. Lyophilized powder, a ready-made solution and a spray are different products. Solutions and sprays are priced by volume and concentration, not by dry milligrams.
• A lot-level COA. A price from a supplier that can't show HPLC purity and mass-spec identity for the lot you would receive is not comparable to one that can. See how to read a peptide COA.
• The same purity basis. 98 and 99 percent by HPLC are close. A vial with no lot COA is an unknown at any price.

Adjust for net peptide content

A labeled milligram is not always a milligram of peptide. Lyophilized peptides carry counter-ions such as TFA, acetate or HCl, plus some bound water, so the peptide share of the powder, its net peptide content, is often well under 100 percent. Whether a label states powder weight or peptide weight varies by supplier, so ask.

When two suppliers state net peptide content, divide each price per labeled mg by its net content to get a price per mg of peptide. In illustrative figures, not our prices, $0.50 per labeled mg at 80 percent net content is $0.625 per mg of peptide. If only one supplier reports it, compare on labeled mg and note the gap. The net peptide content guide covers how it is measured and what each salt form does to it. Our price per mg table uses labeled mg, not net content.

Add the costs that are not on the price list

• Freight. Add shipping to the order total before dividing. Here, freight is quoted on the pro-forma invoice.
• Payment costs. Wire fees, card surcharges and crypto network fees all change the delivered cost. We take wire transfer or cryptocurrency only; see paying for wholesale peptides.
• Minimums and tiers. The price per mg you pay is the one for the tier your whole order reaches, not the lowest on the list.
• Testing you would have to buy. If a supplier provides no lot COA, an independent purity and identity test on each lot is part of the real cost.
• Damage and replacement. A supplier with no written damage process leaves the transit risk with you.

How tiers change the answer

Wholesale tiers are set by quantity, so one compound can have three prices per mg. Here the tier is set by the total kits on one order and applies to every kit on it: Starter from 2 to 49 kits, Standard from 50 to 99, Volume from 100. Compounds and sizes all count toward the total, so a 100-kit order spread across ten compounds is priced at Volume for every kit. Orders of 500 kits or more can be priced by quote.

Within one compound, the largest vial size is usually the lowest price per mg, but not always. The price per mg table lists every size side by side, and its questions name the exceptions.

A worked comparison (illustrative numbers, not our prices)

Three quotes for the same compound, each with a lot COA:

Quote A has the lowest pack price and the highest price per mg. Freight moves the numbers: two kits from C with $30.00 freight on the order come to $790.00 for 200 mg, or $3.95 per mg delivered. Net content moves them again: if C's lot is 75 percent peptide by weight, the delivered $3.95 becomes $5.27 per mg of peptide, and A and B need their own net content figures before they can be compared on the same basis.

Price match on the same compound, size and form

If you find a lower wholesale price, we match it on the same compound, size and form from a US supplier, shown in a written quote or published price list, with the product in stock and a third-party COA for the lot. We compare per vial at the same quantity and verify the price before matching; a price we can't verify isn't matched. Clearance, coupon and auction prices are excluded. The details are in the terms, and requests go through the price match form.

Questions