Other than that ridiculous button tear, the shirt was pristine. No wear at the collar or cuffs, looks like it had been worn a couple times and pressed. Either the original owner (or more likely goodwill) pulled on the shirt so hard the ridiculously well-stitched button tore the shirt halfway down the front.
If it fit, depending on price I probably would still have grabbed. I mean you could probably get that cleanly stitched back up, and since its under the placket, it would never be seen.