Live vendor comparison
Cheapest Protirelin — 2026
Updated today
The cheapest Protirelin right now is $100.97 at Behemoth Labz. We compare 2 vendors with normalized per-mg pricing so you're comparing apples to apples. Prices update continuously.
Protirelin pricing across our tracked vendors ranges $100.97 (cheapest) to $101.33 (most expensive) for what should be the same compound. Median is ~$101.33. Tighter spread than usual for this compound, suggesting most vendors are pricing it at the commodity tier. COA quality differences matter more than $/mg here. Cheapest vendor changes ~weekly based on restocks and discount cycling.
Why this page exists
Peptide prices vary wildly between vendors — sometimes by 3x or more for the exact same compound at the same purity. Vendors use different quantity sizes to obscure comparisons. PeptidePrices normalizes every price to a standard unit so you can see the real cheapest deal.
How we rank: Only in-stock listings are shown. Prices are deduplicated per vendor (cheapest variant only). Non-normalized listings (missing quantity data) are excluded. See our full methodology.
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