BuyDig offers the factory-refurbished Nikon WU-1a Wireless Mobile Adapter, model no. 27081B, for $27.95. Coupon code "WIFIPIX" cuts that to $17.95. With free shipping, that's $10 under our refurb mention from three weeks ago and $21 under the lowest total price we could find for a new one. It allows you to send photos from your camera automatically to your smartphone, or to use your smartphone to control your camera. It features 802.11n wireless and compatibility with Android, iOS, and multiple Nikon cameras. A 90-day Nikon warranty applies.