How much does this cost to the nearest dollar?

Sennheiser Pro Audio Sennheiser EW Instrument Wireless Band Black/White, 100
Rugged all-in-one wireless system for Guitar and bass Transmission range up to 100 meters/ 300 feet Easy and flexible wireless synchronization between transmitter and receiver via infrared State-of-the-art live sound on a lightweight aluminium transmitter with integrated mute switch Up to 20 compatible channels Weight 0.98 Kilograms, Dimensions 15.9 x 13.78 x 2.87 inches, model number ew 100 Batteries 2 AA batteries required. (included), Rank Musical Instruments 62050, Wireless Lavalier Microphones & Systems 1213, Is Discontinued No, Available March 29, 2018, Color Name Black/White, Material Type Aluminum, Battery

Price is $679.00

Price: $679