What specific element of a Walmart seller account has the greatest effect on the Buy Box algorithm?

The specific element of a Walmart seller account that has the greatest effect on the Buy Box algorithm is consistently competitive pricing combined with reliable fulfillment performance. While factors like seller rating and customer service metrics are important, the algorithm heavily prioritizes offering customers the lowest price from a seller who can reliably deliver the product on time and as promised. This means having prices that are at least as low as, or lower than, competing offers for the same product, while also maintaining a high level of on-time delivery, low order defect rate, and efficient inventory management. For example, a seller with slightly higher prices but exceptional fulfillment metrics (e.g., 99% on-time delivery and a low return rate) may still win the Buy Box over a seller with the absolute lowest price but unreliable shipping and frequent order cancellations. Regularly monitoring competitor pricing and optimizing your pricing strategy to be competitive, while simultaneously ensuring consistently reliable fulfillment, is crucial for maximizing your chances of winning the Buy Box and driving sales.