I'm talking about a typical ratcheting screwdriver like one that
has a hex bit holder on the end. I've done some research/shopping,
I've seen many different brands. Talking about the ratcheting
screwdrivers priced from $8-$30.

How much force can be applied when turning it in the working
direction, without doing any damage whatsoever?

How long would it last if it were spun in the reverse direction?
The direction that makes it click.

Is there going to be much difference between $8 and $30 models in
those respects?

I intend to put them to the test. So I'm just wondering if it's in
the ballpark to think that they can take all the force most of our
hands put on them when using them to drive nuts or screws. And
also that turning them in the reverse direction so they spin/click
freely does no harm no matter how long you were to do that.

Thanks.