Does anyone have a list or know of any web hosting providers that charge soly based on pay per use. As a Publisher pay-per-use has tremendous advantages.

Companies that I know of that hae such billing polies are

hostonfly
bsdwebhosting

let me know if anyone knows of any others.

Define exactly what your mean by "pay-per-use "...

You mean pay money depends on disk space and bandwidth used each month? Am I right?

Yes, correct. Essentially no fee for added virtual hosts/emails.