Smart speakers are useful in our daily lives: They help us remember things, answer questions we ask them, and can even control our lights and appliances. They're not cheap, though, and since the least expensive Echo speaker typically costs $50, you have to be selective about which rooms to put them in. However, thanks to this deal on a 3-pack bundle, you can get three third-generation Echo Dots for just $70 and enjoy talking to Alexa anywhere in your house.