51. A respiratory therapist who advertises fees or prices shall do so in a manner that can be understood by members of the public who have no special knowledge of respiratory therapy and he shall1° set fixed fees or prices;
2° specify the nature and scope of the services included in the fees or prices;
3° indicate whether additional services or products may be required that are not included in the fees or prices;
4° indicate whether expenses or other disbursements are included in the fees or prices.
The fees or prices must remain in effect for a period of at least 90 days following the date of the last broadcast or publication of the advertisement. However, a lower price may always be agreed upon with a client.