How We Check Every Price and Code
Research Peptide Coupons tracks coupon codes, bulk offers and prices for research peptide vendors. It is edited by Dirk Westwood. This page sets out the rules every number on the site follows, and how the site makes money.
Eight rules, four do and four don't
The same rules apply to every vendor, including the one we recommend.
- We do
Codes come from the vendor's own domain
A banner, a promo page, a FAQ or a product page on the vendor's site. If the vendor does not show it, we do not list it.
- We don't
No codes from coupon aggregators
Codes copied between coupon sites are not listed, even when they look plausible. We have no way to trace them.
- We do
Every code says where it was seen
Each one carries the page and the date, plus the words "not tested by us".
- We don't
No guessing or inventing codes
When no public code exists, the ticket says "No code yet". We do not fill the gap.
- We do
Prices are read off the product page
Price and vial size as shown on the day, including a sale price if the page marks one.
- We don't
No checkout testing
We do not place orders or apply codes in a cart. A code can expire or carry limits we cannot see.
- We do
Everything is dated
Prices, offers and codes show the date they were read. Older than a few weeks means recheck before relying on it.
- We don't
No human-use content
No instructions, amounts or claims about people or animals. The vendors sell for research and laboratory use only.
The price per mg sum
One division, shown so you can repeat it on any vendor page.
$89.99 ÷ 10 mg = $9.00 per mg
$49.99 ÷ 5 mg = $10.00 per mg
with a 40% kit price: $89.99 × 0.6 = $53.99 → $5.40 per mg
Prices above: BPC-157 at PSPeptides, read on Nov 6, 2026. The kit line is our arithmetic, not a price shown on the site.
What is on the site today
On Nov 6, 2026 we read 46 prices and the offers of 7 vendors, all on the vendors' own domains. One vendor, Palmetto Peptides, showed a public code. Peptide Sciences and Amino Asylum both showed notices that they no longer sell.
When things change
Vendors change prices and end offers without notice. When we recheck, the date on the page changes. If you see a price or code that no longer matches the vendor's site, tell us and we will look again.
Research use only
Every vendor on this site sells research peptides for laboratory research use only. Nothing here is for use in people or animals, and nothing here is medical advice.