They are NOT affiliates. They are thieves. You will not be paid. There are hundreds of these sites out there and more popping up every day. They scrape Amazon and grab your images, bullet points, titles, and descriptions. They then post them on their own sites and get pod companies to print them up.
They are affiliate sites. Basically free advertising for your designs. You get your normal royalties and they get a very small percentage from Amazon for promoting that does not cut into your royalties. It's a win win for everyone.