[member=194914]Gornoeth[/member] don't forget to check out Hampton's Versalok and strainer kit options also while you are contacting the retail supplier. Hopefully they will be more forthcoming than Hampton Steel HQ !?
Versalok looks to be "on paper" a bit more versatile/simpler than Staplelok and their metal strainer systems seem quite straight-forward also.
(However, not sure how one removes Versalok clips should one need to - while Staplelok system blurb does actually say post staples can be removed!)
Of course, none of this stuff will compete price-wise for the basic materials with traditional timber intermediate posts & strainer arrangements, BUT, as you have almost certainly deduced, they are so much easier to install AND can offer viable single-handed installation without the cost of machinery or extra pairs of hands (unless you want) and, therefore, can offer considerable overall cost savings (installation and life-time costs).
[If you've searched TAS posts on fencing systems you will know already I personally went with McVeigh Parker's offerings of Clipex which was developed in Australia and sold here is slightly different form by McV P.]