Did you know that you could be on the same computer, but in 4 different browsers, you could have 4 different Amazon keyword search results, even if the delivery address is all the same? Did you know that you could be using the same browser as a friend across the street, or across the country, and have different keyword ranks?
While keyword ranks do not fluctuate for top products TOO much, some fluctuations have happened for years. Thats why in 2018, Helium 10 was the first, and still the only Amazon tool that incorporates "boost:'' The ability to track 24 different random browsing scenarios every day. Thus, you will be able to know if your listing might be suffering from things like the "Amazon Search Shuffle," or other rank fluctuations.
To learn how to track rank this way click here : https://www.youtube.com/watch?v=ToSSyOOUHzg&lid=x4auf7zltcaf