Amazon Prime Reaches Peak Membership: Why Target Should Worry

In the age of Amazon.com, and its Prime membership perk of free two-day shipping, three days to five days appears to be stretching into a long wait for consumers. With the online powerhouse recently giving shoppers the ability to join Prime on a monthly basis — making the expense a little more palatable for those on tighter budgets — our May survey of more than 7,000 consumers reveals that membership rose 6.5 percent month-over-month to a current 33.5 percent of American adults who have access to Prime member benefits, a new high.