How much does this cost to the nearest dollar?

EXMAX Wireless Tour Guide System Microphone for Language Interpretation Church Traning Translation Conference Interpretation Travel (1 Transmitter 10 Receivers)
EXMAX wireless audio transmission system could transmit voice of who speaking to microphone of transmitter to the ones wearing earphone of receivers,transmission distance is about 50-60 meters frequency channels on means it has 99 selected IDs allowing at least 40 groups to work simultaneously.Widely used for field trip,tour guides,exhibition live explanation, sermon interpretation,silent conferences,church translation,audio visual laboratory,events for church,hajj.. Transmitter weighs 56g and receiver weighs and light for carry or carriage.High S/N ensures clear voice transmission. Long-Lasting Power,both transmitter and receivers are built-in 900mAh lithium upgraded

Price is $330.00

Price: $329.99