In determining the service component of the rates to be paid by the state under sections 17b-244 and 17b-246 to private facilities and facilities operated by regional education service centers that are licensed to provide residential care pursuant to section 17a-227, but not certified to participate in the Title XIX Medicaid programs as intermediate care facilities for individuals with intellectual disabilities, the Commissioner of Developmental Services shall consider for each facility the actual wage and benefit costs for services and service providers, adjusted for inflation, and said commissioner shall not establish a single fixed amount for wage and benefit costs that is applicable to all such facilities.