I am not sure we are talking the same fence. HT wire is a single strand of wire.
ZA High-Tensile $51 would buy over 2,000 feet of wire which would allow 4 strands of wire for 500 feet.
I bought my HT wire at the local farm store, I just use the kencove site as a reference to show prices and the wire. The kencove site does have good information on fencing as well.
I bought a small spool of HT wire years go to top of the garden fence and to fence off an entry point on our land used by some $%^&*() ATVers.
Later,
Dan