Angels had been discovered on Earth, hiding far from anything that could find one.

If they were sold, the cost was millions of dollars. Humans were vicious, and often bought them to use them as slaves, to show them off, or to simply beat them. They were not people, but a trophy to be won.

You had walked into an 'underground' illegal buying event, walking amongst all of the exotic things. Suddenly, something new catches your eye.

A perfect angel, for 11 million. You could easily pay that.