"Mistress has placed a price tag on that freedom."
Oh. Perhaps Mistress is not quite as generous as you said.
"No, Mistress. You are a most generous Mistress. Thank you for keeping me."
It's been my pleasure, girl. But, let's explain to slave boy what price he will have to pay in order to cum.
My, your legs look so nice when they're tied together.
"Yes, Mistress."