How Do I Interpret the Data in the Chrome Extension Chart on an Amazon Product Page?

When you have the Chrome Extension installed and active on your Chrome browser, the product pages on Amazon load with additional data. This data helps you evaluate the history of a product's sales on Amazon. In this tutorial, we'll look specifically at the BSR chart for a blanket.


The chart shows the official list price and selling price history, along with the sales rank by date for a parent ASIN. The chart's color coding helps distinguish the lines from each other, especially as you view longer time periods. The gold represents the official list price, the blue represents the actual selling price, and the purple represents the sales rank. To view the numbers in the boxes, place your cursor over the chart and corresponding data pops open.



To change the date range on the chart, simply click on the time frame you want to review from the list of options at the top of the chart.


As you increase the date range, the lines on the chart become more compressed, helping you see larger trends. The chart allows you to set the range for 24 hours, 7 days, 30 days, 90 days, 1 year and for all time. All time generally dates back to when the ASIN was first listed for sale on Amazon.





Viewing the longer cycle allows you to see some irregularities and big changes. First of all, we can see that when this ASIN first launched in July 2017, the official sale price was set much lower than it is at the time of this viewing. The product was first priced at $19.99, then gradually increased it to $24.99. During that time, the list price and the sale price were the same, therefore the lines are merged. Than, in January 2018, the list price jumped up dramatically to $79.98, but continued to actually sell for $24.99. Retailers often set separate list prices and sale prices to give customers a sense that they are getting the product at a discount.


Finally, you may also see what appear to be discrepancies in the chart, especially when you review a product that has been selling for a while. Gaps in the lines can be the result of several things. Possibly,  Amazon didn't have the data available for Helium 10 to include in the chart, or there was no Buy Box assigned for the product at the time. Another reason might be that there was no available inventory to sell, temporarily. For example, the product could be sold out or in transit.

You might also note wide fluctuations in the sales rank, especially at the beginning. This variation is not uncommon when an ASIN is first launched and while the seller is running promotions to win the Buy Box. The increase, and then stable consistency, of a product's sales rank result from careful planning, marketing and time. 



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