On average, the cost of barbed wire fencing can range from $1 to $2 per foot for the wire alone. When including posts, tension wire, and installation services, total costs can rise to $2 to $6 per foot, depending on the aforementioned factors. For instance, a simpler project that requires minimal fence posts and straightforward installation may fall closer to the lower end of that spectrum, whereas a more complex installation in rugged terrain with high-quality materials could push costs closer to $6 or more per foot.