How much does this cost to the nearest dollar?

Anleon MTG100 Tour Guide Wireless System Church System (1 Transmitter and 10 Receivers)
PLL frequency synthesis technique for stable signal transmission. UHF frequency range with 6 selectable channels One transmitter can be operated with multiple receivers within the operating range Dynamic expanding circuit for high S/N ratio. Complex interference-free circuit for using more than 4 sets simultaneously without mutual interference Both transmitter and receiver use LCD-display to indicate frequency,channel,battery,level status Long operating range up to 100m Wireless tour guiding,simultaneous translation, audio-visual eduation Carrier Frequency 902 907 912 917 922 927Mhz Frequency Response Number of Channels 6 Transmit Power Ratio >50dB Operating Transmitter and Receiver Transmitter and Receiver Power Supply 2x1.5

Price is $549.00
Price: $549