Amazon has received a $600 million tariff refund following a U.S. court ruling that invalidated Trump-era import tariff measures. The company plans to return portions of these refunds directly to affected customers and use remainder funds to lower product prices. This resolution comes after consumer lawsuits claimed they overpaid due to tariff pass-throughs, and marks a significant policy reversal affecting major retailers including Apple and Walmart. Implications include potential price pressures across e-commerce and clarification of retailer liability for tariff impacts on consumers.