If you trek for kheerganga it will take 2 days for up and down and cost you around 1000 for guide but it's not required and stay and all will cost you around 3000 as hostels are available on kasol at 200-400 per day
Hey Krishna, A 4-day trip to Parvati Valley costed me 5500. Expect to shell out 7-8k for a 5-day trip. You can definitely cut down expenses by staying in hostels/budget hotels, travelling by local buses and by not visiting expensive cafes.
It depends on from where are you starting your trip and with how many people you are planning and what mode of transport you are using.
from chandiagrh 5k each is enough for 4 people for 3 days while travelling from bus