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.