I received the Firestick today. Installed easily, piece of cake, and works excellent. Definitely worth the $20.
Bonus: Our TV service at home is Comcast's Xfinity. I found a download hack that installs the Xfinity app on the Firestick (which for some reason is not supported by Amazon, but the Fire TV is. ??? Not sure why that is.) But after the install, the Xfinity app works like a charm, right alongside all the other regular apps. Result is I now have Live TV channels on my guest room TV, almost the same as having a cable box connected. My $20 investment will be saving me something like $100 a year. I like that! But now, when someone stays in the guest room, they can watch their favorite channels.
I haven't figured out the Alexa part yet. The remote has a voice control, but other than asking Alexa what the outside temperature is, everything I've tried isn't working right. I think it needs to be set up. When I asked Alexa where we are, she said we were about 75 miles away from where we are. So I think she's got some 'splainin' to do.
Dave