Newegg offers the On Networks 802.11n Wireless 4-Port Router, model no. N300R, for $0 via the instructions below. With $3.99 for shipping, that's the lowest total price we could find by $18, although we saw it for a buck less on Black Friday. It features four LAN ports, double firewalls, transfer rates of up to 300Mb/s, WEP and WPA/WPA2-PSK support. Deal ends May 5. To get this deal:

1. View the On Networks N300 802.11n Wireless 4-Port Router for $14.99
2. apply code "EMCETGN45" to cut it to $5
3. redeem this $5 mail-in rebate for a final price of $0