I would like to take all day city tours in Yangon and Bagan and probably a 1/2 day tour in Mandalay. Any idea what an all day tour would cost, as well as a 1/2 day tour. I would prefer a private car and tour guide unless it was too expensive so any info would be much appreciated. 

why? grab a travel  guide, put down what YOU want to see, rent a taxi and go for it..