How a Product Taxonomy System Solves the Biggest Challenges in Resale

By
Joshua Beach

Running a resale business is nothing like traditional retail. Instead of standardized products and predictable inventory, secondhand and consignment-based businesses manage an ever-changing influx of one-of-a-kind items—each with its own attributes, condition, and pricing considerations. The challenge? Keeping track of thousands of unique SKUs efficiently.

Without a structured approach to product categorization, inventory management becomes chaotic, online discoverability suffers, and scaling feels impossible. This is where a product taxonomy system becomes a game-changer.

The Challenges Resale Businesses Face

Resale businesses deal with thousands of unique SKUs, and most e-commerce systems aren’t designed to handle the complexities of secondhand inventory. Traditional retail platforms rely on standardized product catalogs, assuming multiple quantities of the same item exist. But in resale, every product is one of a kind, making bulk listing, automated sorting, and accurate search functionality a challenge. Without a robust taxonomy system built for resale, merchants are left with disorganized inventory, inefficient workflows, and poor online discoverability—ultimately leading to lost sales and higher operational costs.

❌ Problem: Inconsistent Product Categorization

Brands classify similar items differently—one might call an item a “Blazer,” while another calls it a “Jacket.” These inconsistencies make searchability difficult and create a frustrating customer experience.

❌ Problem: Poor Search & Filtering

Without a consistent taxonomy, customers struggle to find the right products. If they can’t filter properly, they’re more likely to leave your store without making a purchase.

❌ Problem: Time-Consuming Manual Data Entry

Manually categorizing and tagging products is tedious and error-prone, slowing down operations and leading to mismatched listings.

❌ Problem: Unstructured Data Creates Inventory Chaos

When products aren’t organized properly, inventory becomes difficult to manage. Duplicate or misclassified listings create confusion and inefficiencies.

Classification: Where It All Begins

Most e-commerce systems, like Shopify, only provide one or two classification fields for products. While this works for traditional e-commerce companies, it severely limits resale businesses that deal with an extensive variety of one-of-a-kind items.

Major retailers, on the other hand, use a structured approach to categorization—starting with broad categories like "Men" or "Women" and refining down to highly specific product attributes. After analyzing this pattern, we realized it closely mirrors the scientific taxonomy system used to classify objects in fields like biology (learn more here).

After further research, we found that leading online platforms, including Instacart, rely on robust taxonomy frameworks to categorize and manage their vast inventories efficiently. Inspired by these best practices, we designed a four-tiered taxonomy system, specifically optimized for secondhand businesses.

How a Product Taxonomy System Works

With a product taxonomy, you can create a structured framework that categorizes items based on key attributes like primary segment, category, type, and style. This system not only makes inventory more searchable and organized but also streamlines everything from product intake to pricing and merchandising. For resale businesses, an effective taxonomy ensures that customers can easily find what they’re looking for—whether online or in-store—while reducing the manual effort required to sort and list unique items.

At Ribbn, we've pioneered a unique approach to the taxonomy system by using a 4-tiered hierarchical structure that simplifies product attribution while maintaining rich, detailed categorization. Our system organizes items from broad categories down to specific attributes, ensuring that every product is accurately classified and easy to find. This not only improves search and filter functionality for shoppers but also helps resale merchants automate listings, optimize pricing, and reduce the time spent on manual inventory management.

Ribbn’s 4-Tiered Taxonomy System

Our system organizes products into four key tiers, making inventory easy to search, filter, and manage.

1. Primary Segment

Broadest category grouping products at the highest level.

Examples:

💡 Why it matters: Primary segments establish the foundation for product classification by grouping items into broad but essential categories. This high-level structure ensures that all inventory is sorted into logical starting points, making it easier to refine classifications further down the taxonomy.

2. Product Category

Defines the general type of product within a segment.

Examples:

💡 Why it matters: Product categories provide a clear structure that helps merchants quickly assign products to the correct segment. By standardizing these groupings, resale businesses improve inventory organization and enable more intuitive filtering and browsing for customers.

3. Product Type

A more detailed classification within a category.

Examples:

💡 Why it matters: Product types add another layer of specificity, ensuring that products are correctly placed within their broader category. This refinement allows for more accurate search results, better filtering, and improved recommendations, making it easier for buyers to find what they need.

4. Product Style (Optional Enhancements)

Further defines the product at a granular level to enhance search accuracy and filtering.

Examples:

💡 Why it matters: Product style enhances discoverability by allowing customers to filter down to their exact preferences. Whether it’s a specific cut of denim or a particular boot silhouette, these attributes create a personalized shopping experience while ensuring consistency in product attribution.

An AI System’s Best Friend

A structured taxonomy isn’t just about organization—it’s the foundation that enables AI to work smarter. By leveraging a well-defined categorization framework, Ribbn’s AI engine automates much of the attribution work that would otherwise be manual and time-consuming. Our AI intelligently extracts product attributes from images and descriptions, then maps them to the correct standardized categories within our 4-tiered taxonomy—with 99% accuracy.

This eliminates the need for merchants to manually classify each item, ensuring consistent categorization, reducing errors, and significantly accelerating the listing process. What was once a tedious, labor-intensive task is now fully streamlined, allowing resale businesses to scale with ease.

How Taxonomy Improves the Resale Experience

A well-structured taxonomy doesn’t just improve internal inventory management—it creates a better experience for buyers and sellers alike:

🔍 Better Searchability

Customers can filter products more precisely, leading to faster discovery and higher conversion rates.

⏳ Reduced Listing Time

Automated categorization speeds up the product intake process, cutting manual work.

📦 Optimized Inventory Management

Stores can efficiently track, manage, and analyze stock, reducing overhead costs.

💰 Higher Sell-Through Rates

Proper classification ensures products are listed in the right categories, increasing visibility and sales.

How to Set Up Your Product Taxonomy

  1. Prepare a CSV file with taxonomy data following this format: Ribbn Clothing & Apparel Taxonomy CSV
  2. Upload it under Products > Settings > Product Taxonomy
  3. Review and confirm mappings

Get Started Today

Already on Ribbn? Log into your Dashboard to start using the Product Taxonomy System today.

Got questions? Our team is here to help! 🚀

Stay

updated

Be the first to know about upcoming product releases, new store openings, resale trends, and more—straight to your inbox.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.