E-commerce Product Restock Alerts
Never miss a restock again. Monitor any product page and get alerted the moment out-of-stock items become available — on any website, any brand.
How it works
Paste the product page URL and describe what you're waiting for in plain English. change-happens checks the page daily and sends you an alert as soon as your item is available — no browser extensions, no account setup on the retailer's site, no code.
"Monitor this Nike product page and alert me when size EU 44 becomes available. Also let me know if the price changes from the current €120."
Any retailer, any product
Works on any publicly accessible product page worldwide.
Variant-specific alerts
Watch for specific sizes, colors, or configurations.
Price drop alerts too
Combine restock and price monitoring in one agent.
Popular restock monitoring use cases
Sneaker & limited-release drops
Nike SNKRS, Supreme, YEEZY, New Balance — catch restocks before they sell out again.
Electronics & GPUs
PlayStation 5, NVIDIA GPUs, Apple products — monitor multiple retailers at once.
Toys & collectibles
LEGO limited sets, Funko exclusives, trading cards — track direct and reseller sites.
Fashion & luxury
Specific colorways, limited runs, collaboration pieces on brand websites.
Home & furniture
IKEA items that sell out fast, Dyson restocks, kitchen appliances.
Health & wellness
Supplements, medical devices, skincare products with high demand.
Frequently asked questions
How does product restock monitoring work? +
You provide the URL of any product page and describe what to watch for — 'notify me when this item is back in stock' or 'alert me when a specific size or color variant becomes available'. change-happens checks the page daily and sends you an alert the moment the condition is met.
Which websites can I monitor for restocks? +
Any publicly accessible product page: Amazon, Nike, IKEA, Shopify stores, Supreme drops, electronics retailers, sneaker sites, LEGO, or any brand's direct-to-consumer store. If you can view the page in a browser, change-happens can watch it.
How quickly will I be notified when an item restocks? +
Monitors run daily by default. For high-demand limited-release items where speed is critical, you should set up multiple monitors. You'll be alerted in your daily digest the morning after availability is detected.
Can I monitor for specific product variants like sizes or colors? +
Yes. You can be highly specific: 'Alert me when Nike Air Max 90 in size EU 43 becomes available' or 'Notify me when the black colorway of this sneaker is in stock'. The AI understands product variant context.
Can I also track price drops, not just restocks? +
Absolutely. You can combine both: 'Alert me when this product is back in stock AND the price drops below €80'. Or set up separate monitors for price tracking and availability tracking.
Is this useful for resellers and e-commerce businesses? +
Yes. Resellers use it to catch limited drops before bots do (using a natural-language setup, not automation). E-commerce businesses use it to monitor competitor stock levels and availability patterns.
Start tracking your wishlist today
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