Newegg offers the TP-LINK HS100 Wi-Fi Enabled Smart Plug 2-Pack for $54.99. Coupon code "EMCRGBD47" cuts the price to $39.99. With free shipping, that's $5 under our October mention and the lowest price we could find by $15. It can be controlled via a smartphone and features scheduled on/off and away modes, 802.11n wireless, and voice control via the Amazon Echo (sold separately). Deal ends June 19.