Amazon Stock Checker & 999 Trick

Instantly Check Estimated Stock Availability on Amazon Product Pages

Amazon Stock Checker helps you quickly check the estimated available stock quantity for Amazon products using an automated “999 Trick” workflow.

Instead of manually testing quantities, this extension runs the process for you and shows the result in a clean Stock Checker box on the product page.

⭐ Key Features

✅ Automatic “999 Trick” Stock Check ➞ Runs the stock-check automation and shows the estimated maximum purchasable quantity based on Amazon’s quantity limits.

✅ On-Page Stock Checker Box ➞Displays results directly on the product page (right sidebar or below the Buy Box).

✅ Fast Results + Loading Status ➞ Clear progress indicator while checking, plus instant view once finished.

✅ ASIN Lookup Link ➞ Quick link to open ASIN details for additional reference.

✅ Lightweight & Easy to Use ➞ No setup needed—install and check stock while browsing.

🧠 How to Use

➞ Open any Amazon product page ➞ Find the Stock Checker box (right sidebar or below Buy Box) ➞ Wait for it to load (or view instantly when available) ➞ Use ASIN Lookup for more details

🎯 Ideal For

➞ Amazon sellers (FBA/FBM) & resellers ➞ Product sourcing / wholesale research ➞ Virtual assistants (VA) ➞ Deal hunters & inventory monitoring workflows

⚠️ Important Notes

Results show an estimated available quantity based on Amazon’s cart/quantity behavior and may vary by seller, region, account limits, or Amazon restrictions.

Designed for product pages (not guaranteed on every layout, A/B test, or marketplace variation).

🔒 Privacy

This extension does not collect, store, or sell personal information. It only interacts with the Amazon page you’re currently viewing to display the stock estimate.

❓ FAQ

1. What is the “999 Trick”? ➞ It’s a common method that checks estimated availability by attempting a high quantity and observing Amazon’s allowed quantity/limits.

2. Does this show exact “real stock”? ➞ It shows an estimate based on Amazon’s maximum allowed quantity behavior, which may not always equal exact warehouse stock.

3. Where do I see the stock result? ➞ On the product page in the Stock Checker box (right sidebar or below the Buy Box).

4. Does it work for all Amazon countries? ➞It’s built to work across multiple Amazon marketplaces, but results can vary by region and page layout.

5. Does the extension store my data? ➞ No—no personal data is stored or sold. The check runs on the page you’re viewing.