Been building my own 0-100V Supply, as like Dave says they are rare.
Main problem is the 600W SMPS I bought to power it, lied a bit about it's output voltage.
I've rewound the secondary so it's actually a stable output voltage, but now I've lost the some of the bits I removed.
I took enough photos to find and order replacements, its just annoying.
Be much happier to get the NGA102, and finish this other project in my own time.