@shahjee111: sir you ought to study some maps, PTDC publishes some wonderful maps please see detailed maps here http://www.tourism.gov.pk/citymaps.html print version have text to guide you as well, if you are determined enough to go through PTDC's website then read this section as well http://www.tourism.gov.pk/destinations.html
rates depend on season, area and your negotiation skills. Kaghan valley would accommodate you if you are on a budget, you can go there on NATCO buses for Rs. 700 or so from Pindi, they have tent hotels in Naran which charge around Rs. 500 to 1000 per night, tent is good enough for around three persons. Cemented hotels would start from Rs. 1,500 to 2,500 depending on hotel and number of tourist visiting.
You can explore Neelum valley, in Azad Jammu Kashmir on public transport as well and stay at cheaper hotels but the ones operated by AJK Govt are a bit over your stated budget.
Swat, Gilgit, Skardu etc can all be explored on low budget on public transport but you will have to be conservative about making side trips as you will find hiring Jeep, porters, mules and guides are more expensive than hotels.
BTW do you have a total budget in mind? there are some tour operator companies who can offer you a package as well check OLX or Facebook as well.