cost of farm fence
1 A Portable Horse Fence can cost $1 to $5 per foot of twine or tape. 2  A one inch pony rail has an average cost of $.21 to $.28 per foot of rail. 3  Farm fencing using barbed wire suspensions can cost $1,500 to $2,500 for a 400 m area. 10 acres of land would cost around $2,000 to $4,000 for the fencing alone. A one inch pony rail has an average cost of $.21 to $.28 per foot of rail. 2  Farm fencing using barbed wire suspensions can cost $1,500 to $2,500 for a 400 m area. 10 acres of land would cost around $2,000 to $4,000 for the fencing alone. 3  The materials of the fencing alone.