Amazon changes prices ~2.5 million times a day — roughly once every 10 minutes per product, ~50× more often than Walmart (Profitero)

Claim: Amazon changes prices about 2.5 million times a day — roughly once every 10 minutes per product, ~50× more often than Walmart (~50,000 changes/month). Figure from a Profitero study, widely repeated.

Source: Profitero study, cited by RebateKey, Omnia, Nimbleway.

Confidence: Single-source study, widely repeated.

Caveat: Profitero sells competitive-pricing analytics — incentive to make the volume look high. Magnitude has not been independently verified at this level of detail.

Why this matters for Candid: Useful as the canonical "what large-scale repricing looks like" reference. For most Candid SMB clients the appropriate answer is not algorithmic repricing — but understanding the scale clarifies why competitor-pricing tools are sold the way they are.