WEM newsroom
Amazon vs eBay
Products WEM lists at both retailers, GBP, in stock. Convenience is not the question — the gap is. The summary publishes only when at least 5 pairs exist; fewer than that is a sample, not a finding.
Not enough overlapping products yet
Right now 0 products carry both an Amazon and an eBay offer. The gate is 5. Individual histories are still public on the tracker.