Groupon offers the Western Digital My Net N900 Central HD Dual-Band 802.11n Wireless 4-Port Gigabit Ethernet Router with 1TB Hard Drive, model no. WDBKSP0010BCH-HESN, for $89.99 with free shipping. That's $10 under our July mention and the lowest total price we could find by $19. It features four Gigabit Ethernet ports, one USB port, 450/450 Mbps data transfer rates (combined dual-band speeds up to 900 Mbps), and automatic backup to its 1TB hard drive. Deal expires September 14.

Need more storage space? Also available is the Western Digital My Net N900 Central HD Dual-Band 802.11n Wireless 4-Port Gigabit Ethernet Router with 2TB Hard Drive, model no. WDBKSP0020BCH-HESN, for $139.99 with free shipping. That's the lowest total price we could find by $17, although it was $10 less ten days ago.