What is the usual price charges for copywritings?

For example.... a very short headline just for a little product? And then its following sub headline/copies?

Or those copywiritngs that you usually see in those hypermarket catalogues?

Then what about sub-copies? How to charge?

Thanks a lot.

Spelling mistake? Where? Please kindly point it out for me seriously. Thanks.

And, but, what is the minimum prices to you guys would charge then??