Apple officially discontinued its AirPort lineup of routers including the AirPort Express, AirPort Extreme and Time Capsule back in April. At the time, the company said that they would be available while supplies last. It appears that supplies have now run out.
As a replacement, Apple has added the Linksys Velop Whole Home Mesh Wi-Fi System to its online store. You can purchase the Velop system with one, two, or three nodes for homes of varying sizes.
Prices on Apple's store are $179.95 for one, $299.95 for two, and $449.94 for three.
If you're looking for something cheaper, Amazon currently has the well reviewed Netgear Orbi Whole Home Mesh WiFi System with three nodes on sale for $246.17.