A year ago, Amazon raised the “2nd-day†threshold for non-Prime subscribers to $49 (Prime members can receive free postage). But a few weeks ago, Wal-Mart announced a policy of "Free orders for $35 for 2-day delivery service (without subscription)". In response to the competitor's clamour, Amazon finally made the decision to re-rate the "2nd-day" threshold to 35 US dollars over the weekend. In addition, the free postage threshold for books is still $25. Traditional retail giants are increasing their emphasis on online sales. In addition to Wal-Mart, Best Buy also launched a $2 policy to members for free on the 2nd day of delivery in July last year. But as the undisputed online retail giant, Amazon apparently will not let competitors go too smoothly.