The commissioner may, upon notice and opportunity for all interested persons to be heard, issue such rules and orders as shall be necessary to carry out the provisions of this chapter. To assist in the review of any transaction, or to otherwise determine compliance with this chapter, the commissioner may retain, without appropriation under N.H. Rev. Stat. Chapter 9 and without qualifying as a department expenditure under N.H. Rev. Stat. § 4:15, attorneys, appraisers, independent actuaries, independent certified public accountants, or other professionals and specialists, the cost of which shall be borne by the company subject to such review. The company shall pay the retained professional or specialists directly for their costs. The commissioner shall conduct oversight of such independent reviewers in a manner that is consistent with standards for the use of independent reviewers established by the National Association of Insurance Commissioners in its Financial Condition Examiners Handbook and Market Regulation Handbook and shall ensure that costs are reasonable for the work performed.