Couldn't find this deal posted before..
Link: http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en
49.99 plus free shipping..
Overview
The 200Mbps Powerline Ethernet Adapter Kit uses your existing electrical
outlet to create a secure high speed building-wide network. Instantly
network computers in different rooms without running new Ethernet cabling.
This adapter kit creates a stable high speed network and is ideal for use in
building types that interfere with wireless networking signals. Advanced
DES and 3DES encryption provides users with Powerline data security. LED
displays show device status for easy power management and troubleshooting.
Connect one adapter to your network and plug the other adapter in to any
electrical outlet in your building for instant high speed network access.
Manufacturer Part# : TPL-303E2K
Dell Part# : A4768795