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Sell-in vs. Sell-through: Understanding essential ecommerce metrics

Timo Sprinkhuizen
20 November 2024
Learn the key differences between sell-in and sell-through as metrics - why they matter, and how to optimize them for better vendor performance.
Sell-in vs. Sell-through: Understanding essential ecommerce metrics
5:40


In ecommerce, understanding and applying key metrics is a big step to being successful on platforms like Amazon. And, enables manufacturers and suppliers to sell directly to Amazon.

And most marketplaces provide a great platform to enable manufacturers and suppliers to sell via their platform. For instance, Amazon Vendor Central acts as a central hub for managing orders, pricing, and promotions. This streamlined management allows sellers to focus on optimizing performance and understanding key business metrics.

Among these metrics, sell-in and sell-through, play big roles when it comes to inventory management and sales performance.

In this article, we break down the key differences, applications, and benefits of sell-in and sell-through metrics.

We also share actionable tips to help you optimize your inventory and sales strategies based on these insights.

And finally, we introduce how our Vendor Hub can simplify tracking and managing your ecommerce operations, giving you the tools to drive better results and grow your business on marketplaces like Amazon.

In a nutshell, sell-in tracks how much stock is sold to retailers, while sell-through measures how much of that stock is sold to customers.

Sell in Sell through v-2

Let's have a more detailed look into both these metrics:

What is sell-in?


Sell-in refers to the quantity of products that Amazon orders from a vendor to stock in their warehouses. This metric is typically a reflection of Amazon’s forecast for consumer demand and its confidence in a vendor's products. Sell-in is particularly relevant in contexts like new product launches, seasonal promotions, or wholesale negotiations, where ensuring sufficient stock on hand is critical for meeting anticipated sales.

From a procedural standpoint, sell-in entails Amazon placing purchase orders with the vendor, who subsequently complies by delivering the ordered inventory to Amazon's storage facilities. This procedure allows Amazon to manage inventory movement and prevent possible stock shortages, assisting vendors in achieving sales goals on the platform.

By synchronizing sell-in strategies with Amazon’s demand indicators, vendors can effectively control inventory levels and seize sales opportunities.

What is sell-through?


Sell-through, conversely, gauges the speed at which products transition from Amazon's stock to the consumers. This metric indicates product demand, which is essential for vendors as it offers insights into sales velocity and product performance.

A high sell-through rate shows that a product is performing well and might require reordering, whereas a low sell-through rate could suggest the necessity for inventory changes or promotional assistance.

For vendors on Amazon, monitoring sell-through is crucial for optimizing sales opportunities. The sell-through rate is typically determined by dividing the total units sold by the total units received, subsequently multiplying by 100 to express it in percentage form. This rate assists both vendors and retailers in assessing turnover and making informed choices regarding inventory.

Why understanding both metrics is crucial for Amazon vendors


Maintaining a balance between sell-in and sell-through metrics is crucial for developing a sustainable and successful Amazon business strategy. Observing sell-in helps vendors confirm that Amazon maintains adequate stock levels while monitoring sell-through guarantees that products satisfy consumer demand and are being sold from inventory effectively.

For Amazon vendors, these metrics can have a significant impact on vendor scorecards, which Amazon uses to assess performance. A high sell-through rate combined with optimal sell-in levels indicates a well-managed product line, making vendors more likely to receive future purchase orders from Amazon.

Additionally, understanding and balancing these metrics helps prevent both overstock and understock situations, reducing the risk of lost sales due to stockouts or holding costs from excess inventory.

How ChannelEngine helps Amazon vendors optimize sell-in and sell-through


Our marketplace integration platform offers Amazon vendors a comprehensive solution to optimize sell-in and sell-through rates, and offer much more!

By automating and streamlining various aspects of your ecommerce operations, we enable you to:

  • Adjust stock levels: Maintain optimal inventory to meet demand without overstocking.
  • Forecast accurately: Utilize data-driven insights to predict consumer demand and plan accordingly.
  • Respond proactively: Quickly adapt to market changes, ensuring your products remain competitive.

In addition to these features, our Vendor Hub provides:

  • Recovery Management: Automate the recovery of lost revenue by efficiently managing and resolving disputes related to shortages and price discrepancies.
  • Catalog Management: Centralize the updating and synchronization of product listings to ensure accurate and consistent brand representation across Amazon's global channels.
  • Purchase Order Management: Simplify and automate the procurement process, from order receipt to shipment and invoicing, reducing administrative overhead and ensuring timely fulfillment.


By leveraging our platform, you can enhance your vendor performance on Amazon, leading to increased sales and improved customer satisfaction.

To learn more about how ChannelEngine can improve your Amazon operations, schedule a free consultation with our marketplace experts today.
Published on 20 November 2024
Timo Sprinkhuizen
Timo Sprinkhuizen is the Product Marketing Lead at ChannelEngine. He loves simplifying the complex by creating compelling narratives around advanced products for global audiences. Off the clock, Timo is all about tech, sports, travel, music, and good food.
Timo Sprinkhuizen
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