Many smartphone-controlled light bulbs cost a pretty penny, even if you're not interested in mood-setting colors or other elaborate tricks. How are you supposed to afford enough bulbs to illuminate your entire abode? That's where GE's new Link bulbs could save the day. While you'll need a hub ($30 by itself) to get everything connected, the LED-based white lights cost just $15 to $25 each -- in contrast, Philips' upcoming Lux models are $40 a pop. There's also a kit that includes two 60W-equivalent bulbs and a hub for $50, or half as much as you'd pay for an equivalent Lux bundle.