Yugster offers the refurbished Linksys N600 Pro 802.11n Wireless Dual-Band Range Extender for $19.97 with free shipping. It simultaneously extends ranges for 2.4GHz and 5GHz bands. Features include up to 600Mbps data rates, two Ethernet ports, and WEP, WPA, WPA2, or WPS security. Deal ends January 19. A 90-day manufacturer warranty applies.