How much does this cost to the nearest dollar?

Intona USB 2.0 Hi-Speed Isolator, Standard Version, Black,
Features Provides galvanic isolation to the USB bus Compliant to USB 2.0 Hi-Speed (480 MBit/s) Backwards compatible to Full Speed and Low Speed Isolation withstands up to Advanced ESD protection (15kV IEC Air-gap Discharge) Works out of the box, no drivers needed Transparent to host and device wide compatibility to all operating systems, embedded systems and devices Works also with hubs and extenders Supports all USB-specific transfers and modes No additional round-trip latency Powered by USB bus, no separate power supply Ultra-quiet power rail isolation, linear regulation 300mA nominal (500mA max.) output current on isolated side Connectors host-side USB-B; device-side

Price is $279.00
Price: $279