What book would you want done? And how much would it be worth to you?
I would love to have one of The Name of the Wind (no movie so it’d have to be from fan art or her own ideas). The Lord of the Rings is pretty legit too. I’d happily pay $100 per, plus cost of the book. But I don’t know how long it might take her or how many other orders she might get for this. Those will both likely change the price a lot.