[Hum.]

We'll need to form a written contract. This way there is a guarantee on both ends and leaves no room for ambiguity or misunderstandings.

[Contract with a fae... May be dangerous, but—]

And before you get any funny ideas, this is just a standard, written business contract, no magic involved. The property and ownership will not be at stake if it's breached as we will remain the sole owners. Anything to do with ourselves is also off limits. Different forms of compensation can be made instead.