I have done fencing for my farm near Chennai last week ( Nov 2013). it costed me 67 rs/ running feet.
7 ft cement pole 250 rs
one pole for every 2 mtrs
one support pole for every 8 poles
zinc coated barbed wire 12 x 14 gauge 72rs/kg, 28 feet /kg
labour , binding wire etc rs 30 per pole