Was in Lowes, and they have marked their "double drive" ratchet set down to $14.97. When you twist the handle (like a screw driver,) it turns the ratchet. Very useful in tight places where you can advance ratchet but a couple of clicks.
I bought one of these when they first came out. When the opportunity came around to use it, the douBle drive would not work with any amount of resistance from the screw. I can hold it my hand and it works just like advertised but try driving a screw and it fails miserably. Might just be the one I got but I would not recommend it. JMHO.
It however works pretty well for things like putting lightswitches in where lots of turns and not much torque is required.
The original comment is for there new SOCKET HANDLE version as opposed to the screwdriver. That one is a bit less interesting but may be useful in certain tight spaces where torque isn't necessary.