How much does this cost to the nearest dollar?

SONOFF RL560 Temperature and Humidity Sensor Extension Cable, Length (5M), Works with SONOFF THS01, and MS01 Temperature and Humidity sensors, RJ9 4P4C Interface
Work with SONOFF Sensor of RJ9 4P4C Suitable for SONOFF RJ9 4P4C sensor, like THS01 Temp & Humi Sensor, ( RJ9 4P4C jack)waterproof Temp sensor, and MS01 Soil Moisture Sensor. Extend Distance THS01, can be extended to 60M, and MS01 Soil Moisture Sensor can be extended to 10M. RJ11 Connector The cable connector is RJ9 4P4C, supporting hot-plugging making the connection more stable and reliable.

Price is $14.00
Price: $13.89