Just a guess, but I'm thinkin 2k per post section, if it's done with something other than chain link fencing, and if it's gonna stay put, it'll need to be the good stuff, course a guy might get lucky, and happen on to some suitable HD fencing, that would be less expensive than custom new stuff. It'll probably need to be installed behind the concrete wall, to make serviceing it easier, plus the install would be easier. Just thinkin! Bob