damaged goods
1. Literally, products that have become inferior or unsellable as the result of being damaged or impaired in some way. They sold me damaged goods and wouldn't refund my money when I went to return them!
2. A person who is seen as emotionally or psychologically unstable as the result of some traumatic experience. (Possibly derogatory.) Growing up with abusive parents has left me as damaged goods.
3. A person whose reputation has been damaged, corrupted, or tarnished. The young CEO became damaged goods after news of his insider trading spread—now he can't even get a job flipping burgers.
4. dated, derogatory A woman who is considered unmarriageable or otherwise inferior due to having engaged in sexual intercourse before or outside of marriage. I once thought that she was the fairest, purest woman in town, but now that I know she had illicit relations with another man, she is nothing but damaged goods to me.