The U.S.-only promotion, effective from Nov. 5, waives the $25 minimum that customers outside Amazon’s Prime loyalty club must hit for free shipping. The deal lasts until Amazon can no longer promise items in time for Christmas with free delivery, which typically takes five to eight business days. One analyst, Colin Sebastian of Baird Equity Research, said the offer could shave 5 percent to 6 percent off Amazon’s operating profit this quarter.
