Amazon’s announcement that it will hold another shopping sales event known as Prime Day, in mid-October, could give a window into how creators will fare during the upcoming holiday shopping season.

Amazon’s five-year-old influencer program rewards creators on Amazon and social media apps when they review Amazon-sold clothes, accessories and gadgets. These reviewers can make money when their viewers click on links they share on social media, post to their Amazon storefronts, include in lists of product roundups and attach to videos, including reviews and videos in which they reveal recent purchases. One creator I spoke to, Cyndi Lundeberg, has a full-time job in public relations. She says she earns an additional income of around $5,000 per month from Amazon.