How much does this cost to the nearest dollar?

4-Pack Indoor Thermometer Hygrometer,Digital Temperature Sensor Humidity Meters Gauge, LCD Room Monitoring Display for Cars Bedrooms Baby Rooms
Temperature Unit Switching Celsius and Fahrenheit can be switched. Energy Saving And Power Saving With a battery, it is durable and does not need to be replaced frequently. Rigorous Greenhouse Measurement The temperature and humidity senor is more perceptive, ensure the testing data is true. Powerful Induction Built-in imported intelligent humidity sensor, real-time monitoring of indoor humidity, a comfortable and mild environment. Two Kinds Of Put Way 45 degree angle bracket, accord with visual aesthetic appreciation while can balance put on the table at the same time, another kind is wall to hang type. Dimensions 3.9 x 2.91 x 2.8 inches,

Price is $18.00

Price: $17.99