One of the chairs we purchased has a crack in the wood that was repaired prior to purchase.  We didn't notice until several months after our purchase when we removed the cushion for spot cleaning. Not a small crack; a crack that clearly runs the thickness of the upper back portion of the barrel part of the chair.   It's hidden but little it's insulting and sneaky that we received a chair that had been consciously repaired prior to us buying it at regular price.  
The chair is comfortable enough.   Due to the crack we moved the chairs from a high traffic room so the chair with the compromised back isn't  used often.