I personally feel the suggestion is fair: considering how many hours went into making it, designing it, and editing it. The simple fact that it is a suggestion based on the work provided, and that you’re absolutely under NO OBLIGATION to pay that much. It is extremely rude to tell creators that their efforts are worth less than what they price their products at based on your own personal opinions, and I would refrain from making that particular comment in the future as it is particularly gauche.