"Prime Day" is a rip-off, and the pricing schemes border on fraudulent. Give yourselves a pat on the back for tricking people into spending money they'd be better off saving.
Here's more on the report: http://www.consumerwatchdog.org/story/your-amazon-sale-item-...
Effectively the FTC is required to do its due diligence and the FTC has not accused Amazon of anything. It's some third-party group making the accusation.