... you don't need thousands of them to produce around 20,000 sales over a 26 month period.
Just 3.000 buying an average of 6 or 7 copies.
From what I've seen, that's about right.
The evidence lies within any Numan FB group/forum.
You're obviously not familiar with the core Numan fan mindset.
For them, it borders on obsession.
They'll have to own each of the 12 variants and then add duplicate copies.
I'm aware of a hard core of fans buying at least 20 - 30 copies of this release.
A pre order period of 26 months also has to be factored in.