How much does this cost to the nearest dollar?

ZWave temperature, humidity, dew point sensor Aeotec aërQ, wireless, battery powered, SmartThings sensor, Z-Wave Plus, Z-Wave hub required
Wireless, battery powered, Z-Wave temperature and humidity sensor Super-small at 1.38 inches. It can be installed almost anywhere you need to measure temperature and humidity, and analyse some attributes of air health. Manufacturer Aeotec, Part Weight 1.44 ounces, Dimensions 1.36 x 1.36 x 0.7 inches, model number Batteries 1 Lithium Ion batteries required. (included), Is Discontinued No, Size 1.36\, Color White, Finish Plastic, Material Plastic, Thickness 17.85 Millimeters, Mounting Type Tabletop, Battery Cell

Price is $39.00

Price: $39.4