TigerDirect offers the Ultra 500Mbps Powerline Adapter Kit, model no. U12-42489, for $49.99. Coupon code "PHI138787" cuts it to $29.99. With $4.37 for shipping, that's $50 under list price and the lowest total price we could find. They support up to 500Mbps data transfer rates and extend network access through your electrical outlets. Deal ends September 29.