Newegg offers the TP-Link AV Nano Powerline Adapter Starter Kit, model no. TL-PA4010KIT, for $39.93. Coupon code "EMCAXKV56" cuts it to $29.99. With free shipping, that's tied with our May mention and the lowest total price we could find by $8. These adapters allow you to create a network using your home's existing electrical wiring and feature speeds up to 500Mbps. Deal ends September 23.