Today only, Amazon offers its Prime members offers the TP-Link 300Mbps 802.11n Universal Wireless Range Extender, model no. TL-WA850RE, for $19.99 with free shipping. (Non-members can spend $35 or more to bag free shipping; otherwise it adds $8.35.) That's $5 under our April mention and also the lowest total price we could find today by $5. It extends the range of wireless signals and features Ethernet, 64/128/152-bit WEP, WPA-PSK / WPA2-PSK encryptions, and five indicator lights.