The shaft I'm sure is fine just like the other cheap china shafts, big ridge down it but it's fine, what's the butt made of? I seen a few china break/jump Cues and the pin seems to always move where it breaks down and causes a wobble but still it works fine.
I have a guy on one of my APA teams that bought one on Amazon. It feels okay but sounds a bit strange. He likes it. The allowed him to make 6 monthly payments of $50 for it. Shaft appears to be CF. A bit heavy for my taste at 21oz, no weight bolt.