The superintendent of a regional jail or regional jail farm may, with the approval of the governing regional jail or jail farm board or jail authority, provide for the establishment and operation of stores or commissaries in regional jail or regional jail farm facilities to deal in such articles as he deems proper. The net profits from the operation of such stores shall be used within each facility respectively for educational, recreational, or medical purposes for the benefit of the inmates to include behavioral health, substance abuse, reentry, and rehabilitative services for the benefit of inmates and may be expended to pay for the training, salaries, and benefits of employees or contractors whose primary job is to provide such programs and services to the inmates.