HowManyExtension

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HowManyExtension

Uncover Your Competitors True Inventory

Uncover Your Competitors
True Inventory

Uncover Your Competitors True Inventory

Act now to save time and earn money by joining the over 20,000 daily active users

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14 day free trial. No credit card needed

See Past Seller Inventory Limits Directly on the Amazon Product Page

Look behind previously hidden FBA inventory with our limit busting feature, so your competitors can no longer hide their FBA inventory by limiting the amount they sell!

Automated 24/7 Hour ASIN Tracking and Monitoring

Our one click add to monitor feature allows you to Monitor Inventory levels every day without having to manually click the chrome widget every time!

Advanced Insights and Trend Analysis on an easy-to-use Customizable Dashboard with E-Mail Alerts (Beta)

View valuable data directly on the product page

Access unique insights to see daily changes in product details such as reviews, sellers, and inventory levels. We use machine learning forecasting to predict stock outs and get accurate monthly sales estimate!

Plans & Pricing

Enjoy truly unlimited usage of our tools with no hidden contracts—cancel anytime.

Advanced Inventory Insights Plan

Maximize your Amazon potential with our cutting-edge inventory monitoring tools

$29.99

/Month

for Unlimited Manual Checks and

10 Free Monitored ASINs

Unmatched Inventory Transparency: View inventory levels up to 999 units per product, even if there is a seller limit!

Comprehensive Seller Data: With our Chrome widget, view stock quantities directly on Amazon pages - both in the buy box and for each seller. Never miss an opportunity due to stock uncertainties again.

Automated 24/7 Monitoring: Stay updated around-the-clock using our always-on monitor. No manual checks required; get updated without lifting a finger!

Exclusive ASIN Insights: Receive daily reports and alerts on ASIN trends and changes directly to your dashboard and email (BETA).

Seller Stock Limit Detection: Understand not just when, but by how many units a seller is limiting their stock. Gain essential insights for strategic decision-making.

Please signup to purchase.

Advanced Inventory Insights Plan

Maximize your Amazon potential with our cutting-edge inventory monitoring tools

$29.99

/Month

for Unlimited Manual Checks and

10 Free Monitored ASINs

Unmatched Inventory Transparency: View inventory levels up to 999 units per product, even if there is a seller limit!

Automated 24/7 Monitoring: Stay updated around-the-clock using our always-on monitor. No manual checks required; get updated without lifting a finger!

Exclusive ASIN Insights: Receive daily reports and alerts on ASIN trends and changes directly to your dashboard and email (BETA).

Seller Stock Limit Detection: Understand not just when, but by how many units a seller is limiting their stock. Gain essential insights for strategic decision-making.

Please signup to purchase.

Advanced Inventory Insights Plan

Maximize your Amazon potential with our cutting-edge inventory monitoring tools

$29.99

/Month

for Unlimited Manual Checks and

10 Free Monitored ASINs

Unmatched Inventory Transparency: View inventory levels up to 999 units per product, even if there is a seller limit!

Automated 24/7 Monitoring: Stay updated around-the-clock using our always-on monitor. No manual checks required; get updated without lifting a finger!

Exclusive ASIN Insights: Receive daily reports and alerts on ASIN trends and changes directly to your dashboard and email (BETA).

Seller Stock Limit Detection: Understand not just when, but by how many units a seller is limiting their stock. Gain essential insights for strategic decision-making.

Please signup to purchase.

API Plan

Elevate your business with our Enterprise API Plan, tailored for large-scale operations

$99.99

/Month

for API access, additional charge per ASIN Monitored

Full Feature Access + API Integration: Access to every feature of our Advanced Inventory Insights Plan with the added flexibility of our user-friendly API. Integrate robust data points and functionality seamlessly into your own systems.

Bulk Monitoring Capabilities: Handle thousands of ASINs efficiently with our 24/7 monitoring system. Enjoy discounted rates for high-volume tracking, designed for enterprise-level operations.

Premium Support: Receive unmatched support and guidance through a dedicated Slack channel. Our team is committed to ensuring your success every step of the way.

Please signup to purchase.

API Plan

Elevate your business with our Enterprise API Plan, tailored for large-scale operations

$99.99

/Month

for API access, additional charge per ASIN Monitored

Bulk Monitoring Capabilities: Handle thousands of ASINs efficiently with our 24/7 monitoring system. Enjoy discounted rates for high-volume tracking, designed for enterprise-level operations.

Premium Support: Receive unmatched support and guidance through a dedicated Slack channel. Our team is committed to ensuring your success every step of the way.

Please signup to purchase.

API Plan

Elevate your business with our Enterprise API Plan, tailored for large-scale operations

$99.99

/Month

for API access, additional charge per ASIN Monitored

Bulk Monitoring Capabilities: Handle thousands of ASINs efficiently with our 24/7 monitoring system. Enjoy discounted rates for high-volume tracking, designed for enterprise-level operations.

Premium Support: Receive unmatched support and guidance through a dedicated Slack channel. Our team is committed to ensuring your success every step of the way.

Please signup to purchase.

Testimonials

See what our users say about us.

“After three months, we cut our storage fees by 80%…”

After three months of using How Many, we cut our storage fees by 80%. Before, I relied on guesswork and often miscalculated, resulting in high storage costs. How Many was a key piece of the puzzle in achieving these savings!

Will Ellis

FBA Merchant for 5 Years

“How Many is absolutely critical for us to keep our profit margin...”

How Many is crucial for maintaining our profit margins. Previously, I made uninformed purchases, not knowing my competition's inventory levels. Now, How Many provides insights into potential product demand before buying. It's invaluable for wholesale arbitrage, allowing me to see behind seller inventory and assess my potential profit. My sister uses it for online arbitrage to check competitor stock and monthly sales, enhancing our decision-making process.

Jan Pohnan

Amazon FBA Arbitrage Reseller for 10 Years

“We save probably 10 hours a week using How Many…”

We save roughly 10 hours a week with How Many, transforming our inventory tracking from a cumbersome chore into efficient, streamlined work. Previously, assessing competitors' stock felt as impractical as mowing a lawn without a mower. Now, How Many has become indispensable for us, especially in competing for Amazon’s buy box, by significantly reducing the time and effort required for inventory management.

Nhan Dinh

CEO AA Power Equipment Amazon

Reseller and FBA Merchant for 10 Years

Start your 14 day free trial. No credit card needed

HowManyExtension

Launched in 2016 as the pioneering Chrome extension to display real-time inventory levels on Amazon, How Many has evolved beyond our wildest dreams, adding features like the comprehensive monitor tool for enhanced competitive analysis. Our commitment to innovation is driven by our dedication to our customers, and we look forward to continuing to serve and support you in navigating the competitive landscape of e-commerce.

support@howmanyextension.com