How much does this cost to the nearest dollar?

LEKATO 5.8Ghz Wireless Guitar System 4 Channels Audio Digital Guitar Transmitter Receiver
Plug and play, UHF technology, high frequency, effective range is about 100 feet(outdoor).. Less than 6ms latency, no lag or no signal loss; supports simultaneous broadcasts on 4 channels. 110dB dynamic range, high-quality audio broadcasting, and full frequency response. Built-in rechargeable lithium battery, working time is up to 5 hours after fully charged, comes with a USB cable. 220° rotatable plug design, available for most popular electric music instruments. Weight 168 Grams, Dimensions 6.65 x 4.37 x 1.93 inches, Batteries 2 Lithium Polymer batteries required. (included), Rank Musical

Price is $57.00
Price: $56.99