I tend to agree with EZ-Duzit in the debate on Page 1. The reliability of a vise is paramount. Doubts must be resolved by rejecting the purchase.
That's why I won't buy a Chinese vise, even though some are very good. And I am horrified that formerly great vise manufacturers, like Wilton, have gone Chinese. The degradation in quality is obvious.
When second-guessing your purchase of this vise, ask yourself whether you would have bought the vise knowing that the repair had been made. If so, what price would you have paid? Keep in mind that it was sold for a reason, without disclosing the damage and repair.
Others chimed in above about the theoretical adequacy of vise repairs. Yes, maybe, if you made the repair yourself, or it was repaired by someone you trust. In such cases, the nature of the damage and the quality of the repair are known.
There are plenty of good quality underused vises are out there waiting for new owners. Keep looking for one that leaves no doubt about its ability to do the job you need it to do. And once you find it, QUIT LOOKING, or you will end up like me, with many dozens of vices sitting around unused, each purchased because it was a little bigger, nicer, or different from the ones I already had.
Confession: I'm still using the first big vise I got. Made in Taiwan. Given to me by my 92-year-old buddy Robert Gillespie, who has since passed on. I can't bear to part with it. And it does as good of a job as I need it to do.