How much does this cost to the nearest dollar?

AEM Cold Air Intake System (Non-CARB Compliant)
The AEM Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Mazda Mazda3 models. Air enters the system through an oversized AEM Dry flow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box space and is protected by a heat shield which is designed to reduce intake air temperature and adapts to the factory cold air scoop. The air intake tube is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices

Price is $340.00
Price: $339.99