A new Amazon Echo Dot Kids Edition is launching today in the US. Retailing for $79.99, it is considerably more expensive than a standard Echo Dot. However, it does come with some unique, kid-friendly perks, including a two-year warranty, colorful rubber cases, and a year's subscription to FreeTime, Amazon's parental control feature. One more cool new feature: Alexa will now listen for the word "please," and praise kids for asking questions nicely.