Amazon offers two second-generation Amazon Echo Dots in Black or White for $79.98 with free shipping. (Add two to your cart; the price drops at final checkout.) That's $39.99 each and the lowest price we could find for this quantity by $20. (For further comparison, we saw a single Dot for $29.99 in December.) It features Alexa voice control, 802.11n dual-band wireless, Bluetooth, and a 3.5mm audio output.