D-Link AX1800 Dual Band Seamless Mesh Wi-Fi 6 System 2-pack, $199.56 on Amazon with 50% off coupon with price reflected at checkout. Coupon can be applied to one item in one order (i.e., if you want four of these, two separate orders will need to be made to get the 50% off). Seems to be a discontinued model (perhaps reflected in the price)
Description from the D-Link website:
COVR-X1872
Wi-Fi 6 technology provides faster speeds, greater capacity and less network congestion
Speeds up to 1.8 Gbps (574 + 1200) built for the modern device-dense smart home
Coverage up to 510 sqm
4 Gigabit Ethernet LAN ports provide optional wired connectivity (per unit)
D-Link Wi-Fi Mesh offers one unified network experience that auto connects you to the strongest signal
OFDMA and MU-MIMO technology communicate more data to more devices while simultaneously reducing latency
BSS colouring helps organise data packets, making your network more efficient and improving Wi-Fi 6 performance
Increased battery life of connected devices with Target Wake Time (TWT) technology
Supports the latest WPA3™ encryption
Voice Control for an even easier home Wi-Fi networking experience
$99.65 at eBay with eBay Plus when you apply both codes SALES28CLEAR and PLUSF22