newegg offers the factory-refurbished Netgear Powerline Network Adapter, model no. XET1001-100NAR, for $15.99. With free shipping, that's $38 under the lowest total price we could find for a new unit, although we saw this as a refurb for $1 less in November. (For further comparison, we also saw a refurbished 2-pack for only $10 more on Cyber Monday, since expired.) A pair of these plug-and-play Ethernet devices can use your existing electrical outlets to create a secure 85Mps network. At least two of these adapters are required to create a network. A 90-day Netgear warranty applies.