many people have already answered your questions perfectly, here are my baara aanay...
1- fare of jeep from Naran to saif ul mulook: 1000-1500 (one way) if you take dedicated vehicle for your group, or 200 on sharing basis
2- what is night stay rent at Naran for low and mid wealth: 500 - 5000, higher end can go upto 10000-20000 per night
3- what is the fee for guide: in 2008 we agreed to pay 500 to the guide, and got sticks from him on rent for 50 rs per stick. on our way back, due to rain it got very slipery and some of our members got injured, our guide was a very nice young man he helped us alot, and we got 2 horses 600 each
4- Is there any huts or camps available at rent for night stat in Saif ul mulook: hut is available as people already mentioned, i dont know its rent. there is also a maintained camping site by forest department, they have made cemented plateforms for errecting camps and charge 50-100 rs per night per camp.
if you have low budget, i will recommend you do not stay at naran, instead, when you reach naran, directly head to the lake, and spend night there in camp, its great fun and amazing experience to wakeup before sunset and find yourself at the lakes bank alone, and watch the sun rise on the mountains. another benfit of spending night before the trek at lake is, you can start early morning and come back before sunset, if you are not an experienced trekker or you have office potatos (like us) in your group you may take good 6-7 hours just to reach the lake, coming back is always faster
good luck