How Restock Alerts Work for Sold-Out Sneakers
A plain-English look at page checks, stock status, and why a restock alert sometimes arrives too late.
By AyeWatch Team3 min read
Short answer: A restock alert works by checking a product page on a schedule and comparing the stock status with the last check. When the page changes from sold out to available, the service sends a notification. Speed depends on the check interval and on how quickly the retailer's page updates.
AyeWatch is an AI monitor for public pages and topics. It checks a product page on a schedule and sends an alert when the content changes.
The check
The service loads the public product page, the same page you would see in a browser. It looks for the stock signal: an "add to cart" button, a size selector, or a sold-out label. It stores the result.
On the next check, it compares. A change triggers the alert.
The delay
Two delays stack. First, the check interval: an hourly monitor can be up to 59 minutes late. Second, the retailer's own update: some pages cache the sold-out state for a few minutes even after stock returns.
That is why a restock alert can arrive after the pair is gone. It is a race, not a guarantee.
What the alert can see
Public page content. It can see a size button appear, a sold-out label disappear, or a "notify me" form change. It cannot see stock held in a cart, a queue position, or a login-only page.
It also cannot reserve the item. You still have to check out.
How to improve your odds
Watch the exact product page, not the category page. Use a fast cadence for hyped pairs. Keep the retailer account logged in and payment ready. Act on the alert immediately.
Do not rely on a single retailer. Watch two pages for the same pair.
Cost
AyeWatch Pro is $9/mo with 50 topics and hourly checks; Pro+ is $19/mo with 200 topics and ASAP mode. Every plan starts with a 7-day free trial.
The sneaker restock guide covers the setup.
| Stage | What happens | Delay |
|---|---|---|
| Retailer updates page | Stock returns | Seconds to minutes |
| Monitor checks | Page is read | Up to the interval |
| Alert is sent | Push or email | Seconds |
| You check out | Cart and queue | Depends on you |
Start a monitor in under a minute
Describe a topic or paste a URL. Cancel before the trial ends and you pay nothing.
Try it free for 7 daysThe bottom line
Understand the two delays before you blame the tool. Then shorten both: a faster cadence and a retailer with a fast page update.
FAQ
How do restock alerts work?
They check a product page on a schedule and alert you when the stock status changes.
Why do I get restock alerts late?
The check interval and the retailer's page cache both add delay. Hyped pairs can sell out before the alert arrives.
Can a restock alert reserve the item?
No. It only notifies you. You still have to check out.
How much does it cost?
AyeWatch starts at $9/mo after a 7-day trial. Pro includes 50 topics and hourly checks.
