Revenues for support of the instructional materials service shall be obtained from a computed pro rata share when a majority of the component districts participate in this program. When less than a majority of the component districts participate in the instructional materials service the revenues may be obtained from either a direct fee or such other manner as agreed to by the intermediate unit and the participating districts. Regardless of the source of revenue, the budget for the service shall be included in the operational budget of the intermediate unit.
22 Pa. Code § 9.7