Hiding Out-of-Stock Items or Offering Notify Me

Purchase rate after an item is out of stock

Compare purchases, including alternative products, per assigned visitor from a shared eligible entry point over the same fixed follow-up period.

• Back-in-stock signup rateReport signups per assigned visitor in the visible-product arm; the hidden-product arm has no equivalent form.
• Page exit rateCompare exits from the experience assigned to each visitor.
• Similar-product click-through rateCheck whether visitors use the alternative recommendations.

• ExperienceCompare hiding an out-of-stock product with keeping it visible alongside one fixed back-in-stock form.
• FormKeep form fields and eligibility rules unchanged.
• AlternativesUse the same rules for alternative products in both arms.
• AssignmentAssign visitors before product visibility diverges and keep their assignment consistent.

1. 1Do not show an unavailable product as purchasable and then fail at checkout.
2. 2Keep the back-in-stock form fields fixed; changing them would introduce a second variable.
3. 3Send the promised notification when the predefined stock condition is met.
4. 4Do not delete or redirect product URLs; this test compares the out-of-stock experience shown to visitors.
5. 5Interpret the result as the combined visibility and notification experience, not as the form alone.