How much does this cost to the nearest dollar?

Wireless Guitar System,UHF Wireless Guitar Transmitter Receiver Set Built in Rechargeable Battery for Electric Guitar Bass and more
Specifications ★ Directivity Omnidireactional ★ Frequency response ★ Working time 4-5 hours ★ Sensitivity ★ Charging time ★ Charging voltage DC 5V 500mA+ Features ★ Stylish, ergonomic and comfortable design. ★ UHF high frequency wireless technology with long transmission distance. ★ One-button wireless pairing is quick and easy. ★ Applicable to any audio, musical instrument equipment,just plug it in and you can ready to performance. Function Introduce： 1. Turn on/off Press Power ON/OFF for 3s and it's powered on with Blue battery indicator light on. Press Power ON/OFF 3s again and it's powered

Price is $51.00
Price: $50.99