Although the maintenance fee of super charger may less then turbo charger, and the power output is more gentle. Consider for daily use, it is not worth it.
After install the supercharger, the low end torque may be worst then before, because supercharger need the engine speed to drive them, when the engine speed haven't reach the speed for the supercharge to generate enough boost pressure, the power is hard to be produce.
How about use the money to reduce the weight of the car, with lighter weight, the car can pick-up more faster, improve handling, reduce fuel consumption ^_^, extend life-spend of tire.