Newegg offers the refurbished Netgear N600 802.11n WiFi Dual-Band Range Extender, model no. WN3500RP-100NAS, for $39.99. Coupon code "EMCAVKV35" cuts it to $27.99. With free shipping, that's $27 under the lowest total price we could find for a new one. It simultaneously extends ranges for 2.4GHz and 5GHz bands. Features include up to 600Mbps data rates, USB port, Ethernet port, and WEP, WPA, and WPA2 security. Deal ends July 20.

A 90-day warranty is applied, although it's unclear who backs it.