It is unlawful for any franchise agreement entered into between any franchisor and a franchisee who is either a resident of Indiana or a nonresident who will be operating a franchise in Indiana to contain any of the following provisions:
at an expense to the franchisee that is indeterminate, determined by a third party, or determined by a formula, unless the franchise agreement specifies the maximum percentage of gross monthly sales or the maximum absolute sum that the franchisee may be required to pay.
IC 23-2-2.7-1