Public Relations firms bill by the hour, by retainer and by project. Firms might charge $850 per hour for work with their president or $225 per hour for an account executive. They provide estimates ranging from $40,000 to $500,000. Challenges with hourly rates include the disincentive to work efficiently and the transactional nature of the relationship. Other firms bill by retainer. They charge a monthly rate between $3,500 to $200,000 to perform Public Relations work on your behalf. You determine the work you want done and pay them for a number of hours to do it. Such billing lends itself to confusion over scope and price between firm and client. Unfinished work often results. The best Public Relations firms quote you a final price with every detail spelled out in language you understand. No fine print. The investment into your business ranges from 19,999 to 499,999 per project depending upon the scope of work. You determine the results you want to achieve. The firm guides you through your best opportunities to get the buyers you want.