Amazon doesn't sell Echo speakers at a loss, says Bezos — unless they're on sale - The Verge
Amazon.com: Made For Amazon, Battery Base in Black, for Echo (4th generation). Not compatible with previous generations of Echo or Echo Dot (1st Gen, 2nd Gen, or 3rd Gen). : Everything Else
Amazon.com: Echo Plus (2nd Gen) - Premium sound with built-in smart home hub - Heather Gray : Amazon Devices & Accessories
L'enceinte Amazon Echo est aujourd'hui au même prix que la version Dot