@CROguy_
@joshtCROWhy scarcity messaging matters on the product page
The product page is where a shopper decides whether to buy now or come back later.
A stock line sits right next to that decision, so small wording changes there can move both conversion rate and basket size.
Measured results
Sharper low-stock copy
Dave Diederen changed "Low stock" to "Low stock - selling fast" under the ATC.
Conversion rate rose +2.90% and revenue per visitor +2.50%, with AOV unchanged.
Dave's reasoning is that "selling fast" explains why stock is low, which makes it more believable.
On a supplement store, Dave changed the bundle selector title from "Buy More, Save More" to "Low Stock - Selling Fast".
Same bundles and prices: +4.82% revenue per visitor, +2.32% conversion rate and +2.45% AOV.
A visual scarcity block
Dave's "Selling Out Fast" banner with a % sold progress bar and countdown won +8.04% conversion rate and +8.83% revenue per visitor.
It combined several urgency cues, so the bar's own effect can't be separated out.
Scarcity that matches the brand
Oliver Kenyon ran two tests for brands built on limited runs.
Brand-aligned scarcity text below Add to Cart ("Once sold out, there are no guarantees it will be produced again") was forecast at $44,751/month.
Authentic scarcity messaging with a bold sold-out state and restock notices added +$46,900/month.
Oliver reported both as dollar figures, without percentage lifts.
@oliverkenyon@oliverkenyon
@DaveDiederen@DaveDiederen@DaveDiederenLosing or flat tests
No test was logged as a loss. But one result works as a loss for scarcity itself: in Dave's "In Stock" vs "Almost Out of Stock" test, the calmer message won +16.78% revenue per visitor and +5.72% conversion rate.
Dave reported AOV of $93.55 with "In Stock" against $82.81 with "Almost Out".
Dave's reading is that an urgent warning pushes people to check out fast with one item, and can worry buyers of higher-priced items or gifts.
If you already show a strong low-stock warning, testing it against "In Stock" is worth doing.
Untested ideas
- Placement: Dave Diederen suggests a low-stock or "order today" message under the Add to Cart button, or an almost-out-of-stock note under the variant selector.
- Visual counters: Dave suggests a stock tracker that changes color when low. Kasper Dolk suggests "Only X left at this price" under sizes, and a "1 of 50" badge for limited editions.
- Sold-out handling: Kasper suggests disabling the ATC and marking sold-out variants in the selector.
- Part of a rebuild: Josh Thompson lists real low-stock counters inside four larger page rebuilds, alongside FAQs, video and photo reviews.
Placement and design patterns that won
- One short line close to Add to Cart or the bundle selector.
- Copy that gives a reason ("selling fast", "no guarantees it will be produced again") rather than a bare label.
- Scarcity that fits how the brand actually sells, such as limited drops.
- A calm "In Stock" can beat an alarming "Almost Out".
Related tests elsewhere on the store
See the full scarcity collection, sales and urgency tests on product pages, the countdown timer hub and product page bundle tests.