How much does this cost to the nearest dollar?

Bluetooth Amplifier Board with Peak Power Output Class D AMP Module for DIY Wireless Speaker
CHIP HIFI Chip with AM Interference Suppression Function, 50W*2 Peak Power Output WIDE INPUT VOLTAGE RANGE DC 5V-24V with 5.5 * 2.1mm Interface, Laptop Power Supply Is a Good Choice Bluetooth &AUX INPUT User Can Directly Connect with Wireless Bluetooth 5.0, or Choose The 3.5MM Headphone (Line in) Way PROTECTIVE FUNCTION Over-voltage Protection, Under-voltage Protection, Over-heat Protection, Short-circuit Protection, This means that the Bluetooth amplifier board is not easily damaged NOTE Adequate Output Power Is Required When The Audio Input Is Sufficient And The Power Supply Voltage/Current

Price is $18.00
Price: $17.98