Compare the price of the exact size, then add delivery and taxes. Price per mL is useful for comparing volume, but it does not establish effectiveness or how long a bottle will last.
The three prices in this guide
These are selected-size prices checked on official stores on September 9, 2026. They are not a promise that every visitor will see the same promotion or checkout total.
What price per mL can tell you
Divide the listed price by bottle volume. Our selected products work out to $2.98 per mL for The Ordinary, $16.86 for Qualash and $50.00 for RevitaLash. This makes differently sized bottles easier to compare.
It does not make them interchangeable. Application amount, intended areas and the number of daily applications may differ. A lower volume price is a shopping fact, not proof of equivalent performance.
Why cost per month needs more information
To calculate cost per month responsibly, you need a reasonable estimate of how long the bottle lasts under its directions. Do not divide by a guessed number of months just because two packages look similar.
If a brand publishes a supply estimate, identify it as the brand’s estimate and check which size and application schedule it assumes. Your actual use may differ.
The checkout checklist
- Select the exact size from the comparison.
- Confirm the currency is USD.
- Choose the correct US shipping destination.
- Review shipping, tax and any other stated charges.
- Check whether a discount requires a subscription.
- Read return eligibility, time limits and return-shipping terms.
A first-order discount can reduce an initial purchase without reducing the price of future orders. Compare a one-time purchase with a subscription only after checking recurring charges and cancellation terms.
Choose a budget before a bundle
A bundle may reduce the cost per bottle while increasing what you spend today. Before buying multiples, decide whether you want to commit to that quantity and review the product’s storage and use-after-opening information.
Our ranking links to individual product pages so you can select a size deliberately. It does not automatically add a bundle or start a subscription.
Source: Qualash Advanced official store . Reviewed September 9, 2026.
Source: The Ordinary official store . Reviewed September 9, 2026.
Source: RevitaLash Advanced official store . Reviewed September 9, 2026.
