TP-Link and NetGear Wi-Fi extenders are on sale at Amazon
NETGEAR R7000-100NAR Nighthawk AC1900 Dual Band Wi-Fi Gigabit Router Compatible with Amazon Echo/Alexa - Certified Refurbished - Deal Parade
Netgear Orbi Voice Smart Speaker and WiFi Mesh Extender with Amazon Alexa Built-in | P.C. Richard & Son
Amazon.com: NETGEAR WiFi Mesh Range Extender EX6250 - Coverage up to 2000 sq.ft. and 32 devices with AC1750 Dual Band Wireless Signal Booster & Repeater (up to 1750Mbps speed), plus Mesh Smart
NETGEAR R6400100NAS - NETGEAR Smart WiFi Router with Dual Band Gigabit for Amazon Echo/Alexa - AC1750 - Herman ProAV