Amazon has the Netgear EX2700 802.11n WiFi Range Extender (EX2700-100PAS) for $25 - $5 off coupon (Clip extra savings coupon applied at checkout) = $20 with free shipping on $25+. Features coverage up to 600 sq.ft. and 10 devices with N300 wireless signal booster & repeater (up to 300Mbps speed), and compact wall plug design.

Has above average Amazon Reviews.

Amazon has the eero Pro Mesh WiFi Router refurbished for $119 with free shipping. List price: $169. Features backwards compatible with first gen. eero routers, tri-band (2.4GHz, 5.2GHz, and 5.8GHz) 802.11ac wireless, 2 gigabit Ethernet ports, Bluetooth 4.2 connectivity, 700MHz quad-core processor, 12MB RAM and 4GB flash storage, WPA2.

Has excellent Amazon Reviews.

Amazon has the Netgear Dual 802.11ac WiFi Gigabit Router (R6700-100NAS) for $78 - $10 off coupon (Clip extra savings coupon applied at checkout) = $68 with free shipping. List price: $84. It features 4 Gigabit LAN ports, USB 3.0 port, 1GHz dual-core CPU, remote access via the Netgear Genie app.

Has good Amazon Reviews.

Amazon has the Netgear Orbi Home Mesh WiFi System for $253 - $30 off with coupon (Clip Coupon) = $223 with free shipping. Covers an area of 5,000 square feet.

eBay has the TP-Link Archer A7,AC1750 Wireless Dual Band Gigabit Router for $30 with free shipping. Features simultaneous 2.4GHz and 5GHz frequencies, USB, Alexa compatibility.

Walmart has the 2-Pack Wavlink Halo 2 Mesh Wi-Fi System (WN535K2) for $59 with free shipping. List price: $109. Replaces wireless router and range extenders, and the set of two covers homes up to 5,000 sq. ft.