If there’s a single metric all e-commerce business owners should be made aware of, it’s the Price Index (PI). Used to measure a company’s price positioning in the market, this handy statistic can boost sales and help you rise above your competitors.
But how does it do this? Why is monitoring the prices of your competitors so important to the e-commerce game? And what benefits can you make the most of when you incorporate PI into your company’s financial strategy? These are just a few of the questions we’ll set out to answer in this all-inclusive guide to the Price Index.
So, if you’re a business owner looking for a way to make your e-commerce sales soar, look no further! This article has the answers to all your burning questions about the Price Index. Read on to learn about Price Index calculation and discover how you can put PI to work.
What Is the Price Index?
The Price Index, often shortened simply to PI, is a handy metric often encountered in the world of e-commerce. Put simply, it measures your position on the market, allowing you to gain some idea of how your prices measure up against those of your competitors. But why does this matter?
Put simply, calculating the price index of your goods and services allows you to analyze your performance in the market, which then enables you to improve your own position. After all, only after determining the best prices can you find a way to beat them.
No matter what you sell, the Price Index is a metric you should make sure to get familiar with. In the next section, we’ll start by considering how you can figure out this crucial metric in the first place.
How Do You Calculate the Price Index?
One of the most important things a business owner should know is how to calculate Price Index. After all, such a widely applicable metric has a place in any company’s financial plan, no matter what goods or services are being sold.
The Price Index Formula
There are a couple of different formulae used to calculate the Price Index. The one you use depends on whether you’re looking just to compare your own prices against those of one other competitor or if you’re looking to determine the average PI for a particular product on the market.
If you just want to compare the prices of your goods or services to those of a competitor, divide the competing price by your own and multiply the outcome by 100. For example, if you are selling a product for $50 that your competition is selling for $60, you would divide 60 by 50 and multiply the answer—1.2—by 100 to get the result: 120.

The method for working out the average PI on the market is quite simple. First, use the above formula to calculate the Price Index for each competitor on the market. Then, add these indices together and divide the resulting figure by the number of competitors.
Calculating PI
To ensure you make the most accurate calculations possible, we recommend following the series of simple steps laid out below:
- Collate the relevant data. Rather than manually tracking the prices of your competitors, thereby leaving plenty of room for human error to interfere with your results, we’d recommend using a price monitoring service like PricingCraft’s. This will make it far easier for you to collect accurate, relevant data for your financial plan.
- Assimilate the information. We’d recommend using a single spreadsheet for all your data. Ensure that you lay the document out properly so that the info you’ve gathered is easily accessible and readily understood.
- Use the Price Index formula outlined above. So long as you’ve properly formatted your spreadsheet, you should find it relatively simple to plug in the right numbers and get your results.
- Employ sales data to determine the impact your competition has had on your performance. Analyzing the Price Index while taking your sales performance into consideration will allow you to determine to what extent your competitors have impacted your sales.

Why Is the Price Index Useful?
Now that we’ve discussed what the price index is and how to calculate it, you’re no doubt wondering why exactly it’s so important in the first place. As a matter of fact, there are a number of ways in which this metric can prove a useful tool for e-commerce business owners.
Some of the benefits you can enjoy include:
- Unraveling your competitors’ business strategies, allowing you to get a leg up on them.
- Having a greater degree of control over your position on the market.
- Making better-informed decisions and planning effective business strategies going forward.
By gaining a more insightful picture of your place on the market, you will be better able to examine why your profits have increased or decreased when compared to those of your competitors.
Furthermore, the Price Index will allow you to gain a better understanding of consumer behavior, such as spending trends. This information will enable you to make better decisions for your company and will allow you to put in place useful fiscal strategies bound to help boost your overall performance.
In Conclusion
The Price Index is one of the most useful metrics for e-commerce firms and business owners in general. It allows decision-makers to gain a better understanding of how their companies are performing when compared to others on the market. This, in turn, enables them to put in place useful long-term strategies designed to improve their position on the market and boost their overall performance.
This article has not only explained the importance of the Price Index, but has also provided the formulae necessary for e-commerce business owners to put this information to work.