What is the most expensive price paid by a customer for the book "Bite Me If You Can (Argeneau #6)"?
"Bite Me If You Can (Argeneau #6)" is the title of the book; most expensive price refers to Max(price)
SELECT MAX(T2.price) FROM book AS T1 INNER JOIN order_line AS T2 ON T1.book_id = T2.book_id WHERE T1.title = 'Bite Me If You Can (Argeneau #6)'