Got this guy today and put it together right away. One thing I can say about it: It is big. A lot bigger than I expected after seeing the Lego version on the shelf. I expected it to be parts-sparse and rickety and flimsy.
The parts felt sturdy enough and went together smoothly. The figure doesn't crumple under its own weight, which I expected, being completely made out of ball-joints. We'll see how those joints hold up over time, I guess.
At any rate, I declare this a good buy at $11.86 (including shipping).
Pic related, with minifig for scale.
In case anyone asks for sauce:
https://www.aliexpress.com/item/KSZ-Star-Wars-Minifigures-Darth-Vader-White-Storm-Trooper-General-Grievous-Figure-Toys-Building-Blocks-Compatible/32687940439.html 