
Incra T-Track ($17.99 per 4 foot section)

Rockler T-Track ($19.99 per 4 foot section)

McMaster Carr T-Track ($9.94 per 4 foot section)
Because that was spread out, here's a recap of pricing from 2 popular brand names, plus McMaster Carr:
Incra T-Track ($17.99 per 4 foot section)
Rockler T-Track ($19.99 per 4 foot section)
McMaster Carr T-Track ($9.94 per 4 foot section)
They are all extruded aluminum, and all appear to me to be the same dimensions. Looks like if you want a color anodized extrusion, you pay twice as much.
Kreg is another name in this arena, and their stuff is priced at the high end of the scale - my guess is that these guys all probably buy the same aluminum extrusions from the same metal extruder/fabricator.
Rockler sells an intersection kit for about $20, but this could easily be done on a chopsaw:

You can use a variety of bolts on T-Tracks, and probably the most popular is a T-Bolt:

(These are from Rockler, at over $1 each, but surprisingly right now the longest bolts (3" ) are on sale for $0.29 each) The T-Bolts from Incra can't really be $7.50 to $11.99 per T-Bolt, can they? http://www.woodcraft.com/Product/200177 ... -3-12.aspx
T-Bolts are used with a matching threaded knob:

(Rockler photo.) The 5-lobed star shaped one in the middle would be typical to use with the T-Bolt shown above. The one on the right, with the threaded stud, would be used with a sliding T-Nut (for use in a T-Track) or just a plain T-Nut for a fixed jig. The 5-lobed star shaped 5/16-18 knobs at Rockler are $1.89 each. McMaster Carr has them for $0.88 each.
It looks like the hold down clamps are specialty items. Rockler and Incra have them for $9.99 and $8.99 each:


$20 for a pair of these seem pretty steep to this cheap bastard! I know for a fact that a stout piece of wood can be used the same way, but these do look like they do a good job.
Here's another place I found, HartvilleTool, that sells their version of a T-Track hold down for $4.49 the large (A) and $3.49 for the mini hold down (B):
Even though a number of photos on sites show hex-head bolts being used, I would not recomment that they ever be used in these aluminum tracks - too easy to distort the track in tightening the bolt, and if you're afraid to tighten properly you may end up clamping too loosely and have a disaster when something moves.
So, my contribution was simply showing some T-Track pieces and alternative suppliers with pricing, but not any specific cool lutherie jig.
If these US companies will not ship directly to AU/NZ, (probably because you bastards will all make weapons for Al Quaeda in your woodshops!), then you may need to contact one of your mates in the US.
Dennis