Under section 10.30 of circular 230 how long must published fee information

This talks about the fee information. A practitioner may publish the opening of a written schedule of fees and give out the following fee information: (A) Fixed fees for specific routine services. (B) Hourly rates. (C) Range of fees for particular services. (D) Fee charged for an initial consultation.

Also, a practitioner may charge no more than the rate (s) published under the above mentioned of this section for at least 30 calendar days.