The best-selling Ninja air fryer on Amazon is 40% off just in time for Prime Day <img width="1500" height="1000" src="https://gizmodo.com/app/uploads/2024/09/ninja-airfryer.jpg" alt="Ninja Airfryer">Grab the Ninja Air Fryer for just $79 on Amazon—40% off its regular price! https://gizmodo.com/the-best-selling-ninja-air-fryer-on-amazon-is-40-off-just-in-time-for-prime-day-2000505358