Some of the nicest basic gun cases I have ever purchased were at gun shows. Seems there is always one manufacturer there with a large selection and generally running around $15. You might also check out your local Dick's/Cabela's/Gnader type of store.
For me, for just going to the gun club, mine gets put in a gun slip - not as heavy but good protection, since it is sitting in the back by itself. For going into the field, I have a take-down hard case to give it more protection from bouncing around.