Google Chromecast: Easily stream your favorite apps and media to your TV via Wi-Fi with Chromecast. Use the included USB cable to plug the Chromecast into your TV, and control streaming content using your compatible smartphone, tablet or computer.
I love that I can just send videos from my phone to the TV and still be be able to use my phone for whatever I want. Way more simple than having a bunch of remotes, as I also use my phone as the TV remote. The only real con I'd say is that is also has to be plugged into power to work.
Google Chromecast: Easily stream your favorite apps and media to your TV via Wi-Fi with Chromecast. Use the included USB cable to plug the Chromecast into your TV, and control streaming content using your compatible smartphone, tablet or computer.
what is the monthly fee, if any???
Not for the device itself. There will be a monthly fee for any subscription services you choose to cast from other devices.