"How many units is that seller actually moving per day?"
If you're a Coupang seller, you've wondered this at least once.

Some people count reviews, track bestseller rankings every few days, or even order and cancel products themselves. But all of this is just guessing.

Today, we practically compared 3 methods to check Coupang competitor sales. We looked at accuracy, time required, and cost.

Method 1. Reverse-calculate from reviews

METHOD 01
Review Reverse-calculation
The most classic approach. You check the number of reviews every week and reverse-calculate sales using an estimated review conversion rate (usually 2~5%).

For example, if reviews increased by 50 in a week, and you assume a 3% conversion rate, you'd calculate they sold about 1,666 units.
⚠️ Limitations: Review conversion rates vary by category, and this doesn't account for bulk or repeat purchases. The margin of error is larger than you think.

Method 2. Track sales ranking changes

METHOD 02
Rank Tracking
If your rank goes up in a Coupang category, it's a sign sales have increased. You either have to manually record rankings daily or build your own crawler.
⚠️ Limitations: Rankings are relative. If a competitor's product temporarily goes out of stock, your rank might go up without your sales actually increasing. You can't determine absolute sales volume.

Method 3. Use a professional data tool

METHOD 03
Data Tool Utilization
If you enter a Coupang product URL, you can instantly check 28-day sales volume, estimated revenue, conversion rate, and average daily views. It eliminates the errors and time waste of manual tracking.
✓ Advantages: High accuracy, and you get results in 3 seconds with just one URL. You can quickly compare multiple competitors.

Comparison at a glance

MethodAccuracyTimeCost
Review CalculationLowWeekly ManualFree
Rank TrackingMediumDaily Manual/DevDev Resources
Data ToolHigh3 Seconds1 Ticket

So, which method is right?

Review calculation or rank tracking aren't entirely useless. They can be used to get a rough feel before using a tool. However, basing a financial decision like sourcing on a guess is risky.

One bad sourcing decision can wipe out months of profit. For sellers where time is money, the choice between a 3-second data check and guessing is becoming increasingly clear.

📌 What RocketSearch shows you
Product Views28-day total + daily avg
Total Sales28-day total + daily avg
Estimated Revenue28-day total + daily avg
Conversion Rate28-day standard
Enter a competitor's product URL, and all this data appears. A list of major competing products is also provided.