Amazon offers the ZyXEL HomePlug AV Powerline Wall Mount Ethernet Adapter Starter Kit, model no. PLA401v3KIT, for $49.99 with free shipping. That's tied with our June mention and the lowest total price we could find by $12. These adapters plug into wall power outlets to expand your home network without running Ethernet cables through the walls. It provides up to 200Mbps data transfer rates.