I have seen skis that had the binding mat in the wrong place, it looked like they laid up the ski backwards. For some reason they managed to lay up the other ski in the pair correctly.
I have seen a skis that had one of the sidewalls plained, they other sidewall on the ski was vertical, looked like it had been cut with a band saw and then not finished at all.
There do seem to be people who are very happy with the skis though. I guess it comes down to if you get a well made pair or not. Hard to say if you will.