Walmart offers the Eco WorkChoice Indoor WiFi Tap Outlet in White, model no. CT-065W, for $15.55. Choose in-store pickup to avoid the $5.99 shipping fee. That's tied with our mention from two days ago and the lowest price we could find by $6. This 7-day programmable tap outlet allows wireless on/off functionality and power consumption monitoring via the Eco Plugs app for iOS or Android.

Update: The price has increased to $16.10.