How much does this cost to the nearest dollar?

SHNITPWR 12V 3A Power Supply Adapter AC to DC 12 Volt 3 Amp 36W Converter Transformer LED Driver with Plug for 5050 3528 LED Strip 3D Printer CCTV Camera LCD Monitor (2 Pack)
Pack of 2. Input Output DC 12V, Max 3A 36W. It can supply with all currents less than 3A. ---such as 500mA 1A 1.5A 2A 2.5A 3A. If your device draws 2A then 2A will be supplied. But if draws more than 3A, only 3A will be supplied and power supply will be damaged soon. NEVER OVERLOAD！ Output DC connector plug size is

Price is $20.00

Price: $19.99