https://phys.org/news/2018-07-amazon-foods-prime-day.html > Tuesday morning Amazon announced that Prime members who spend at least $10 at a Whole Foods supermarket between July 11 and 17 will get a $10 credit that will be applied to their Amazon account and can be used during the sale. > The discount seems aimed at getting more crossover between the two groups of shoppers. Morgan Stanley estimates that 60 percent of people who shop at Whole Foods are Prime members.