DrayTek SoHo Single Wan routers are cost effective yet feature rich. 

Single WAN xDLS

Vigor2710 Series

One ADSL2/2+ port Four 10/100 Based-Tx Ethernet LAN ports and One USB port One USB port for File System, USB printer and 3.5/4G USB mobile network Two simultaneous IPsec/PPTP/L2TP VPN Tunnels QoS and Robust Firewall including Web Content Filtering IPv4 & IPv6 Dual Stack WLAN model: Vigor2710n (2.4GHz) VoIP model with WLAN: Vigor2710Vn/Vigor2710VDn (2.4GHz)

Single WAN Ethernet

VigorFly 210

USB 2.0 port for 3.5G/4G (LTE/WiMAX) mobile broadband feed 802.11n WLAN Speedy multimedia streaming Web Content Filter

Vigor2130 Series

Unprecedented speeds Support hardware NAT Workable for extreme-high speed multimedia streaming VoIP facilities for low cost call Easy-to-use firewall and secure VPN