Cafago offers the Xiaomi 802.11n Wifi Router / Range Extender for $28.14. Coupon code "ZPAS3WUS" drops it to $18. With free shipping, that's $21 off and the lowest price we could find. It can function as a router or repeater for existing routers and includes two LAN ports. It features WPA-PSK and WPA2-PSK encryption.

Note: This item ships from China and may take two to four weeks to arrive.