In the administration of this article, the Attorney General may accept an assurance of voluntary compliance with respect to any method, act or practice deemed to be in violation of this article from any person who has engaged in, is engaging in, or is about to engage in such method, act or practice. Such assurance may include a stipulation for the voluntary payment by such person of the costs of investigation, or of an amount to be held in escrow pending the outcome of an action or as restitution to aggrieved buyers, or both. Any such assurance shall be in writing and be filed with and subject to the approval of the court of common pleas having jurisdiction. Such assurance of voluntary compliance shall not be considered an admission of violation for any purpose; however, any violation of the terms of such assurance shall constitute prima facie evidence of a violation of the provisions of this article. Matters thus closed may at any time be reopened by the Attorney General for further proceedings in the public interest.