If all you're looking for is a cordless screwdriver that can do some drilling, the B&D Model PD700G (1/4 chuck 6V) is $30 at Home Depot. They have a $19 model too. It is straight and bends to pistol grip. I have no idea how good it is.
For any kind of real work at a cheap price, look into the Ryobi 18V combos while you're at home depot. They have combos that start at $99 for a drill (1/2 chuck 18V) , saw, flashlight, 2 batteries, charger, and tool bag. Replacement batteries are $38 for two batteries. Some cordless tools use $90 batteries. These are much better the B&D, but not as good as the older DeWalt. Current consumer DeWalt is not the same as older DeWalt either.
Jim