https://www.reuters.com/article/us-amazon-com-prime-day/amazon-offers-10-to-prime-day-shoppers-who-hand-over-their-data-idUSKCN1UB164

Amazon.com Inc has a promotion for U.S. shoppers on Prime Day, the 48-hour marketing blitz that started Monday: Earn $10 of credit if you let Amazon track the websites you visit.