More and more MLS's require vendors like us to pay Data Access Fees that are passed through to the customer (you). These vary from $0/month up to $33/month. If we don't have to charge a pass-through fee, we don't. For the MLS you select, this will be clearly displayed on your sign up form, before you complete your sign up process. Although the rates may vary slightly, 99% of IDX companies charge these fees.