No need for jeep in Murree side. However in Naran jeep rates would be economical. Do you plan to visit totally on Jeep from Balakot or you plan to reach till Naran via your own car?
Balakot to Balakot (with Shoogran, Siri Paye, Naran, Saif ul Malook, Lalazar, Lulusar and Babusar Pass) would be 16000 to 18000 for 4 days, 3 nights.
For short trips.. Naran to saif ul malook and back would be 1800-2000, Naran to Babusar & lalazar would be 5000, Shoogran to Siri and Paye would be around 2000.