Dear Swarna:
I got my land fenced in Hyderabad very recently. Here is what I paid, this can give you a ballperk figures to estimate your expenses.
1.Fencing stone each=120 Rs
2.Labour (for installing the stone and fixing the wire per each stone)= 60 Rs
3.Barbed Wire- There are three different guage available, you may choose 12 X 14 which is around 40 to 50 INR per KG-(each KG will have around 6 metres)
4.Binding Wire- around 15 to 20 INR/Kg.
Typically, if you can count how many stones you would need, you will get a tentative figure of how much wire and expenses can occur.
* My rough guess can be around 4 to 5 lakh for the 26 acres land. This is not a accurate figure, there are many paramenters you would need to consider of the land shape,boundaries, how many lines of wire, quality of the barbed wire and the location of the farm. Hope this helps- Good Luck.