Ninja Foodi AG300 4‑in‑1 Indoor Grill – Air Fry, Roast & Bake – Excellent Working Condition. For sale is aNinja Foodi AG300 4‑in‑1 Indoor Grill, a versatile countertop powerhouse that grills, air‑fries, roasts, and bakes with Ninja’s signature high‑heat cyclonic technology.