Operations Playbook
December 30, 2025
5 min

Essential for Global Sellers: Air Freight Small Parcel Price Query Tool, Save 10%+ on Shipping

A free tool that helped me save over 10,000 RMB. Introducing a real-time price comparison tool for YunExpress, Yanwen, 4PX, and SF International air freight small parcel services.

Essential for Global Sellers: Air Freight Small Parcel Price Query Tool, Save 10%+ on Shipping

Long Time No See

I've been down with a bad cold for over a week, so I couldn't record any content. Instead, I've been pouring my time and energy into this application, doing a simple promotion and sharing some tips about freight forwarding.


Tool Introduction

This is a tool that provides real-time access to the latest and most complete air freight quotes from the "Big Four" carriers: YunExpress, Yanwen, 4PX, and SF International. It helps you quickly find the cheapest logistics products based on current pricing, destination country, and package weight.

Temporarily named: "YunShengSheng" (Save on Shipping)

YunShengSheng Tool Interface
Main interface of YunShengSheng, supporting real-time price comparison across four major carriers

Product Value and Freight Tips

As we all know, logistics costs are a major expense in global ecommerce. YunShengSheng serves different types of sellers at various stages.

For Complete Beginners

They often have no concept of shipping costs and don't know where to find accurate and up-to-date price lists. They may not even realize that carrier quotes are regularly updated based on capacity adjustments. For these newcomers, YunShengSheng is an essential tool for cost calculation and developing an initial understanding of shipping fees.

New User Scenario

For Intermediate Sellers

We face a painful business scenario: which carrier is the cheapest? More precisely, which carrier is cheapest at what stage?

Savvy sellers may have observed that at different times and for different destinations, each carrier's pricing can vary significantly. For example, at certain times for certain countries, SF International might offer the cheapest rates, potentially saving up to 10%. But it's unrealistic to expect sellers to monitor all four carriers' price lists daily.

So for intermediate sellers, YunShengSheng is a powerful tool for reducing shipping costs.

Price Comparison Feature

For Experienced Sellers

You already have established logistics partnerships. Occasionally checking market rates helps you understand the gap between your current logistics costs and market rates, allowing you to adjust your profit margins accordingly.

For Industry Professionals

No more secretly collecting price lists from various carriers. No more vaguely claiming "we have the lowest prices." Just screenshot this tool and show it to your clients.


Development Background

Actually, when I first thought about developing Shopify apps and Web apps last year, my first product idea was an integrated price query tool. I even discussed with Doubao how to build it using Coze, but got stuck at the first step of extracting Excel content, so I gave up.

Development Journey

This is my first Web app, built entirely through Vibe Coding. I just removed the domain resolution from Webflow yesterday and pointed it to my own server. Creating ETL scripts with AI to extract data took a lot of effort. Even now, besides the core shipping rate data, some descriptive text hasn't been cleaned up perfectly, but I'll iterate on it gradually.

Technical Implementation

How to Use

Basic Query

  1. Select destination country
  2. Enter package weight (in grams)
  3. The system automatically displays price rankings from all four carriers

Understanding Results

Query results are sorted by price from low to high, showing for each carrier:

  • Product name
  • Chargeable weight
  • Total shipping cost
  • Estimated delivery time
  • Channel features

Supported Carriers

YunExpress

Focused on global ecommerce logistics services, covering 200+ countries and regions, offering dedicated lines, express delivery, and various other products.

Yanwen

A leading global ecommerce logistics service provider in China, specializing in dedicated line small parcels and postal small parcels.

4PX

A world-leading global ecommerce logistics service provider with a comprehensive global logistics network.

SF International

The international business division of SF Express, known for fast delivery times and excellent service.


FAQ


Final Thoughts

Logistics cost optimization is a crucial aspect of global ecommerce operations. By using tools like YunShengSheng, sellers can quickly understand market conditions and make smarter logistics choices. I hope this small tool can help more global ecommerce sellers truly "save, save, save" on shipping costs.

Tool URL: https://selofy.com/en/tools/shipping/query

Bookmark it and check regularly to develop good cost optimization habits.

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