Newegg offers the TP-LINK AV Nano Powerline Adapter Starter Kit, model no. TL-PA4010KIT, for $39.24. Coupon code "EMCWPHF58" cuts it to $29.99. With free shipping, that's the lowest total price we could find by $9, although we saw it for $1 less a month ago. These adapters allow you to create a network using your home's existing electrical wiring and feature speeds up to 500Mbps. Deal ends October 30.