Buy.com via Rakuten Shopping offers the D-Link AC750 802.11ac Wireless Dual-Band Gigabit Router, model no. DIR-818LW/R, for $79.99. Coupon code "4F4A553" cuts it to $49.99. With free shipping, that's the lowest total price we could find by $25. The dual-band (2.4GHz and 5GHz) wireless router features wireless speeds of up to 750Mbps and four Gigabit Ethernet ports.

Update: Price corrected.