https://phys.org/news/2018-05-amazon-prime-members-extra-discounts.html

Amazon wouldn't say if it plans to add the benefits to Whole Foods stores in Canada and the United Kingdom.

In bringing Prime to Whole Foods, Amazon is trying to give members another reason to stay on as subscribers—even as it raises the price—and try to lure those who aren't to join. The discounts could also drive more people to shop at Whole Foods: When it offered turkey discounts last year for Prime members, Amazon said the grocer broke its record for turkeys sold during the Thanksgiving season.