How much does this cost to the nearest dollar?

BLIKZONE Digital Tire Pressure Gauge 100 psi for Car, Bicycle, Truck & RV Back-lit LCD Screen with 4 Ranges, Auto-shutoff, Easy-Grip, Handy Tool (3 Pack Red)
🚗 TIRE PRESSURE GAUGE air compressor accessories, designed to Check your tire pressure often and maintain the correct tire pressure, assuring better handling; reduce tire wear, extend tire life, as well as save gas and TRAVEL SAFELY! 🚘CAR GADGETS easy to use digital tire pressure gauge, to turn on the unit push the black button on the left side and push again to select the desired range to measure. To turned off hold the push button for 3 seconds. It shut off automatically after 30 seconds. 🆙

Price is $31.00
Price: $30.97