Lady here is one I will never forget and it still goes on to this day.
In Thailand and other parts of SE Asia families will sell excess daughters into sexual slavery. They get an initial Virgin price and take a cut off her earnings until she dies or returns home with AIDS.
I always thought that this was weird because a family selling member was something which appalled me. As I got to know the customs and values this was very normal behavior. These excess daughters were prized because they were a future income stream for the families. It allowed them to move up, afford a Truck/Motorbike/etc.
Malaysia, Viet Nam, Cambodia, Laos and others in the region participate in this trade.