For successful eBay sellers, efficiency is everything — from product sourcing and pricing to competitor analysis and profit calculation. Manual work not only wastes time but also increases the risk of missing profitable opportunities.

That’s why experienced sellers rely on browser extensions to automate research, find suppliers faster, and make smarter decisions. Below are 5 must-have plugins for eBay sellers, including one of the most powerful tools for product sourcing: AliPrice Search by Image.

1. AliPrice Search by Image – Best Tool for Product Sourcing

AliPrice Search by Image is an essential extension for eBay sellers who source products from China or want to quickly find identical or similar items at lower prices.

Key Features:

• Search by image: Upload a product image or right-click on any eBay product photo to find the same item.

• Multi-platform support: Search across 1688, Taobao, Tmall, Alibaba, and more.

• Price comparison: Instantly compare supplier prices to evaluate profit margins.

• Price history tracking: Check whether supplier prices are stable.

• Fast supplier access: One-click jump to supplier product pages.

Why eBay Sellers Need It:

If you find a product selling well on eBay, AliPrice helps you:

• identify the original supplier,

• discover cheaper alternatives,

• verify whether the product is dropship-friendly or suitable for bulk purchasing.

Perfect for dropshipping, wholesale sourcing, and private label research.

2. Terapeak (by eBay) – Market Research & Sales Data

Terapeak is eBay’s official analytics tool and a must-use for serious sellers.

What It Does:

• Shows historical sales data

• Displays average selling prices

• Reveals sell-through rates

• Identifies seasonal trends

Best Use Case:

Before sourcing a product with AliPrice, use Terapeak to confirm real demand and pricing power on eBay.

3. eBay Fee Calculator Extension – Profit Estimation Made Easy

Understanding fees is critical to avoiding unprofitable listings.

Benefits:

• Automatically calculates eBay final value fees

• Supports PayPal / managed payments

• Helps estimate net profit instantly

Why It Matters:

Combine this tool with AliPrice supplier pricing to quickly determine whether a product is worth selling.

4. Keepa – Price & Trend Analysis (Cross-Platform Insight)

Although originally built for Amazon, Keepa is still useful for eBay sellers doing cross-platform research.

Key Advantages:

• Tracks historical price trends

• Helps identify long-term demand stability

• Useful for arbitrage and resale strategies

Tip:

Use Keepa to validate whether products sourced via AliPrice have sustainable market demand beyond short-term trends.

5. Honey or Similar Coupon Extensions – Cost Optimization

While not eBay-specific, coupon extensions help reduce costs when purchasing tools, services, or even supplier orders.

Why It Helps Sellers:

• Automatically finds discount codes

• Reduces sourcing and software costs

• Improves overall profit margins

How Professional eBay Sellers Combine These Tools

A typical workflow looks like this:

1. Find a trending product using Terapeak

2. Search for the same item by image using AliPrice

3. Compare supplier prices and MOQ

4. Calculate eBay fees and profit

5. Validate long-term price trends

This system allows sellers to move fast, minimize risk, and scale efficiently.