I bought a set of 50 figs from here:
https://www.aliexpress.com/store/product/10-20-50pcs-lot-Halo-Wars-Building-Blocks-Bricks-Games-Random-Styles-Mini-Action-Figures-Kids/1963818_32830738831.htmlJust to check it out. I don't see any major issues as far as pain goes, but the joints on some were a bit stiff, and one guy's knee snapped off right away. They also came with a pack of brickarms type guns. The right hands on a few of the aliens refused to hold anything, so I had to put the guns in their left hands.
Overall it's probably not a bad option if you wanna do some troop building. Even with the few quality issues, it's probably still a better option then some of the lots I see come up on eBay that cost 15$-20$ more, and half the figs missing body parts.