If Amazon pays a percentage to some website I visited that's really invisible to the customer. Amazon's incentive here is their Karen Carpenter thin margins (too soon? too bad, I'm tired of using razors as the cliche thin metaphor).
Besides your sentense not making a lot of sense (i.e. I have no idea what you are talking about), no one knows what a Karen Carpenter is - some kind of woodworking tool? (I suppose I could google it.)
