When a product has variations, but Amazon assigns the same Best Sellers Rank (BSR) to all of the variation ASINs, Jungle Scout cannot estimate the sales for the individual variations. This is because our estimates are based on the BSR, so if the BSRs are all the same, the sales estimates will also be the same.
In this case, we display the combined estimated sales for each variation on every line.
In the example below, we estimate that the 5 ASINs combined sell about 90 units per month or 3 units per day. This does not mean that each variation sells 90 per month or 3 a day.
When a product has variations and Amazon gives each variation ASIN their own BSR, we can show sales estimates independently of the other variations.
To see those variations, and their individual estimates, you have to go directly to the product's listing.
The variations will be represented by an indented arrow to the left of each variation's title. Here you can see each variation has its own BSR and its own estimated sales.
Please note that the monthly sales are calculated differently as we consider the current BSR and historical daily sales from the last 30 days.
This means that there will be times when you see different monthly estimates even though the variants share the same BSR. The reason this is happening is due to the different historical daily sales!
We calculate the historical daily sales by capturing an average BSR on a given day and coming up with estimated sales for that day. An example below:
For variant A, the average BSR that we captured on February 16th was 8:
Based on that number, we estimate the daily sales for the entire listing would be 3605 (since all products share the same BSR).
Now, for the second variant, we did not capture the average Best Seller Rank at the same time, and that will affect the historical daily sales, which will also 'skew' the monthly sales data - that is causing the difference in the monthly sales:
For variant B, on February 16th, the average Best Seller Rank was 7:
This results in 3796 units of sales for that day, for the entire listing:
You can see that the numbers are close. Still, sometimes we see higher fluctuations in the Best Seller Rank (due to how the product is performing on Amazon) and historical daily sales, depending on the changes in the Best Seller Rank throughout the day.
Nevertheless, whenever the Best Seller Rank is the same for all products, you should look at the sales data, the entire listings, and all variants combined, even if you see minor discrepancies in the monthly sales.