Hey Alex,
I think what makes it less interesting at second sight is that first the people follow the links and are overwhelmed of how cool that type of milling motor is for a cnc router, but then they realize that it will not have the price of under $100 like the Makita hand trim router, but rather $500 up… If you think of how many people buy the chinese crap spindle/VFD/water pump/aviation connector/spindle holder unusable on Onefinity kits for sometimes under $300…
And Daniel’s @PwnCNC’s Spindle/VFD/complete cabling ready-to-use kit is at nearly $1000 ($949.99 / 1.5 kW - 110 V / $974.99 / 2.2 kW 230 V to be exact). And we know people do not always think logically… (especially not in the black/cyber week 
)