Retatrutide is one of the most-searched research peptides right now, and its listed prices are all over the map. The confusion almost always comes down to one thing: comparing sticker prices instead of price per mg.
Why sticker price misleads
A vial of retatrutide might be sold at 5 mg, 10 mg, 15 mg, or as part of a multi-vial pack. A "cheaper" vial that contains less total compound can easily cost more per milligram than a pricier vial that contains more. The only fair way to compare vendors is to normalize everything to price per mg.
The calculation
Price per mg is simply the vial price divided by the total milligrams in the vial:
price per mg = vial price ÷ total mg
A $65 vial at 10 mg is $6.50/mg. A $90 vial at 15 mg is $6.00/mg — the "more expensive" vial is actually the better value. Our price index does this math automatically across every listed vendor so you can sort by true cost.
What else affects the number
For research use only. This article is educational and makes no health, dosing, or usage claims of any kind.