Hi, there--the amount per question is set by the client, but the Expert determines whether or not the price is reasonable for the work/question being asked. It depends on the complexity of the question/work being sought. There is no charge, though, until you are 100% satisfied with the response provided by your Expert. This means that while you place a hold for X amount on your account or card while the question is being answered, the full amount will not be charged until you "accept" the answer. I hope this helps! Please let me know if we can further assist.