Bloomberg reports on a study done by One Click Retail showing that in the wake of its $13.7 billion acquisition of Whole Foods, Amazon “immediately put about 2,000 items on its site from the Whole Foods 365 Everyday Value brand and sold out of almost all of the most-popular items … Web sales of Whole Foods branded products totaled about $500,000 in the first week, according to One Click Retail’s estimate.”

Spencer Millerberg, chief executive officer of One Click Retail, said that “more impressive was the speed at which Amazon began selling Whole Foods products online. Such an integration would have taken several months in a brick-and-mortar chain, he said,” adding that the real “question is whether Amazon can sustain the inventory, and use the stores to decrease delivery costs.”

KC's View: It is the speed thing that ought to scare traditional retailers … because that’s one of the core advantages Amazon brings to the party.