D-Link via eBay offers the D-Link WiFi Smart Plug 4-Pack
in White, model no. DSP-W110, for $64.99
with free shipping
. That's $16.25 per plug, and the lowest total price we could find for this quantity by $47, although we saw them for $5 less in July. These plugs interface with your smartphone or tablet to allow you to control the connected device, and create on/off schedules.