There are close to 10,000 sellers on Walmart. Walmart Marketplace Number of Sellers has the latest figure.
We calculate how many feedback reviews the seller has received in a month, a year and during their lifetime on Walmart.
Feedback isn't a direct representation of sales volume, but it allows to compare sellers to one another. A seller with 15th rank overall is receiving a consistant amount of feedback relative to their sales, so if their rank drops to 25th - either the competition has improved quickly, or the seller sales have slowed down.