Okay so I have managed to get a local Bathurst fabricator to make these up in aluminium for what works out almost identical to the IPDUSA price + GST.
$385 Including GST.
Obviously freight from USA is prohibitive these days and IPDUSA isn't viable.
Option 1; If I can get enough people interested I may be able to get better pricing for 5-10-15...
Option 2; I buy the one I need extra to what I have, then others can order directly from this fabricator that will have all the specs to make them on demand.
Option 3; I request a run of 10 and take all the risk myself and perhaps still have most of them 5 years from now. I'll still consider this if it seems there's demand.
If there's any genuine momentum behind option 1 please let me know by week's end and I'll see what the options are. Otherwise it's likely I'll go option 2.