That's the way I remember it. Adalind sought out someone who could help her be a Hexenbiest again and trading a Royal baby bought her access to the ritual. I'm not sure Adalind was concerned with money and luxury at the time. She wasn't interested in selling the baby, only trading it for a Hexenbiest.
"If my devils are to leave me, I am afraid my angels will take flight as well." Rainer Maria Rilke