This Emerald SM-AIR-1801 3.4-Quart Air Fryer originally $79.99 drops to only $39.99 at BestBuy.com. You save 50% off the retail price for this air fryer. Plus, this item ships free. This is the lowest price we could find online by about $10. The Emerald SM-AIR-1801 Air Fryer features a 3.4-quart capacity, adjustable thermostat, and timer. Sales tax is charged in most states. Deal expires September 14, 2018.