How much does this cost to the nearest dollar?

19V 3.16A Power Supply AC Adapter for Netgear Nighthawk WiFi Router
PN Model Compatible with Nighthawk C7500, C7800, R7850, R8300, R8500, R8900, R9000, RAX75, RAX80, XR700; Orbi RBS40V PN Model Output 19V 3.16A (Please confirm the connector in the 3rd image) Input Compatible with Nighthawk C7500, C7800, R7850, R8300, R8500, R8900, R9000, RAX75, RAX80, XR700; Orbi RBS40V If your model is not here, please paste the link below into a

Price is $21.00

Price: $20.78