How our peptide price comparison works
The vial with the lowest sticker price is often the most expensive buy. In the vial lane, we compare what a milligram actually costs after discount codes, quantity tiers, and bundle deals — with each vendor’s trust rating right beside the price. Other formats stay in separate lanes with their own labeled units.
Price per milligram, not per vial
Vendors sell the same compound in different vial sizes, so vial prices can’t be compared directly. Every vial-lane price is divided by the milligrams you actually receive:
$7.00 / mg
$6.00 / mg
Vial A costs less at checkout, but Vial B is the cheaper buy by a dollar per milligram.
The effective price: what you would actually pay
A list price is only the starting point. The comparison uses the effective price — here is how discounts are counted:
Codes are applied following each vendor’s pricing rules as we last recorded them. On top of a live sale, a code counts only where checkout confirmed the two combine.
Live sales are marked in each compound’s full comparison, so you can see which low prices will revert when the sale ends.
A boosted code or a vendor event, such as a restock discount on multi-vial packs, counts only through the end date we recorded. After that, the comparison goes back to the price you would pay without it.
When a vendor closes its storefront or restricts prices to approved accounts we cannot check, its last prices move to a dated history instead of staying in the current comparison.
Quantity tiers and bundle deals
Many vendors discount at three, five, or ten vials, or run buy-one-get-one offers. A headline “up to 20% off” says little on its own, so these deals are modeled as pack prices, following each vendor’s pricing rules as we last recorded them.
This is where rankings change most: a vendor that looks average for one vial can be the cheapest for ten.
Price the whole order with the Stack Builder
Most orders include more than one compound. Add the vial products you need and how much, and the Stack Builder prices the whole basket at each vendor — applying quantity tiers, bundle deals, and discount codes across the order — so you can see which vendor fills it for less.
Every result is a vial order you could actually place, built from one vial size or pack the vendor sells for each line. Alternate-format offers are not silently substituted. Totals are before shipping and tax.
Cheap is only a bargain if the testing holds up
Every price shows the vendor’s trust rating, and when we have matched a lab report to that exact product, the price card links to our record of it — marked provider-checkable when the report can be re-checked at the issuing lab. The lowest price from a vendor with no verifiable testing isn’t a deal you can rely on.
New to lab reports? Read how to verify a supplier’s lab testing.
Dated prices, market history, and alerts
The comparison shows the date of its latest price update.
Median per-mg prices over time, with 7-day and 28-day changes, show whether the market is moving before you buy.
Get one email when a tracked price drops below your target or sets a new low, instead of checking every day.
Vendor discount codes in one place, with notes on whether they combine with sales and tiers where we have checked.
Compare vial prices per milligram
Per-mg prices, discount codes, and each vendor’s trust rating — side by side, free, no account required.
PeptideBenchmark is an independent information resource; we do not sell products or provide medical advice. Some vendor links and discount codes earn us a commission. Codes are reflected in prices following vendors’ pricing rules as we last recorded them, no paid relationship affects vendor scoring, and sponsored placements are labeled (how sponsorship works).