How much does this cost to the nearest dollar?

Samson Airline Micro Camera Wireless Microphone (Channel N6)
The AirLine Micro Camera Wireless System utilizes the latest in lithium-ion battery technology and high-quality audio and RF components, representing a breakthrough that is ideal for all video camera applications requiring outstanding audio, including DSLR video. The result is our smallest wireless system ever. Wireless system with micro-sized AL2 transmitter, AR2 receiver and double dock, Tone squelch and auto mute for clear operation, Includes a system carry case, hot shoe mount, 3.5mm and XLR camera connectors, AC adapter and charging cables Beltpack transmitter and LM10 omnidirectional lavalier microphone, Lithium-ion rechargeable battery (7-8 hours of operation) Low-profile wireless receiver (2.36” x 1

Price is $316.00

Price: $315.99