The cost of fencing posted above could better reflect the true cost of fencing for prospective homesteaders, sheep runners and goat keepers by adding in actual costs that you will pay... like corners (4 ) (estimate $125 per corner, and cost of actual gate...14' wire filled about $240) at least one gate as well as staples screws nails insulators and the labor. THE LABOR and it only lasts 30 years if you live in a desert. Wood posts 30 years?? maybe some.
Metal Post here in MT run about 5 $ in bulk at 6', wood posts are more and Red Brand wire 330' is 189$ . 169$ on sale a couple times a year. I do not have the equipment or skill to lift the wire out of the truck let alone stretch it or pound post and build corners. Wood post are most preferred for corners and they are taller and larger diameter. Maybe if you do fences for a living or have buddies that help it can be as easy and cost effective as it sound like above.
Total agree it is most important to protect your livestock with proper fencing. Do the numbers. get bids.
Also predators vary according to your area, your crops and stock and management practices. If you live near or in the suburbs you cant just shoot whats eating your goat. Usually dogs in the burbs.. dogs are responsible for 17% of goat predator loss according to American Goat Society. Pee really does work but it needs to be male pee and it only works on animals that fear humans... not dogs. on the other hand if you are protecting plants blood meal or blood keeps deer away. I slaughter animals in my orchard occasionally. Yes it stinks but I value my young replacement trees more.
Dogs are a must for those who actually raise livestock in herds or spend time out working the ranch especially in wooded mountainous terrain. Only wealthy gentleman ranchers have predator proof fencing... and its not predator proof. Digging works well...