As one of its daily deals, Amazon offers Prime members the TP-Link 802.11n Wireless N300 4-Port Broadband Router, model no. TL-WR940N, for $18.49 with free shipping. (Non-members can qualify for free shipping with orders of $35 or more; otherwise, shipping adds $9.05.) That's the lowest total price we could find by $17. It features four LAN ports, three antennas, and WPA/WPA2 encryptions. Deal ends today.