Where to read, buy, and source research peptides
Read · Substack
Gray Market
Rory's Substack. Reconstitution math, vendor news, the peptide gray market explained without the hype.
graymarket.substack.com
Shop · US
Crush Research
Veteran-founded US supplier. Every batch tested, COAs posted, ships same day.
Use code RORY for 10% off
crushresearch.com
Shop · Wholesale & International
Chengdu Biotech
Direct-from-source catalog with a US warehouse for fast domestic delivery and wholesale pricing on bulk orders.
chengdu-biotech.com
Crush Research
Retatrutide (Triple Agonist) prices at Crush Research
Retatrutide (LY3437943) · 3 mL vials · ≥98% purity by HPLC · COA on every batch. Prices from crushresearch.com; the discounted price is what you pay with code RORY (10% off, no minimum). Per-vial and per-mg cost shown so you can compare pack sizes.
Prices checked . Crush's site is the source of truth — if something here is stale, their product page wins. Per-vial and per-mg figures are computed from the pack price after discount.
Questions
Retatrutide pricing, code RORY, and the sites on this page
What does the Crush Research discount code RORY do?
Code RORY takes 10% off any order at crushresearch.com. No minimum, no product exclusions, no expiry. It doesn't stack with other coupon codes.
What is "Triple Agonist"?
Triple Agonist is Crush Research's product name for retatrutide (LY3437943), a 39-amino-acid synthetic peptide with agonist activity at the GLP-1, GIP, and glucagon receptors. It ships as lyophilized powder in 3 mL vials, for in-vitro research use only.
How much does retatrutide cost per mg?
With code RORY at Crush Research: roughly $4.41/mg for a single 10 mg vial, down to about $1.80/mg for a 10-pack of 30 mg vials. Bigger vials and bigger packs are cheaper per mg — the table above does the math.
Is affordablepeptides.biz or affordablepeptides.life the same site?
No. affordablepeptides.com is the only Affordable Peptides. The .biz and .life domains are unrelated copycats.
What is Gray Market?
Rory's Substack at graymarket.substack.com — reconstitution math, vendor news, testing results, and commentary on the research-peptide gray market.
Does Chengdu Biotech ship from the US?
Yes. Chengdu Biotech is a direct-from-source catalog with a US warehouse for domestic delivery and wholesale pricing on bulk orders.
Are these products for human use?
No. Everything linked here is sold strictly for in-vitro research and laboratory use — not for human or veterinary use. Buyers must be 21+.