2005, No.20 Telecommunications Act 2005 127 (b) within ten (10) days from the day on which the tariff or schedule of tariffs is filed, place a notice in Samoan and English in the Savali and one other newspaper circulating in Samoa detailing the tariff or schedule of tariffs and advising that such tariff or schedule is subject to the Regulator‟s approval. (2) Unless the Regulator orders otherwise, a dominant service provider shall maintain a complete and up to date schedule of its Regulator approved tariffs: (a) in an electronic copy on the dominant service provider‟s web site; and (b) in a paper copy available to the public at the dominant service provider‟s main business offices. 42. Tariffs for Services to Other Service Providers – Tariffs charged by a dominant service provider to other service providers: (a) shall be filed with and subject to approval by the Regulator in accordance with section 40; and (b) shall comply with any orders made by the Regulator in relation to such tariffs. 43. General Principles for Tariff Regulation-(1) The Regulator may issue an order to adopt any approach to tariff regulation of service providers that is consistent with this Act, including, but not limited to, price cap regulation, raterebalancing and other forms of cost-based regulation. (2) The Regulator shall not regulate the tariffs of a service provider so as to deny that service provider the right to earn a reasonable return on the service provider‟s investment for the service provider‟s tariff-regulated services. 44. Cost Studies-(1) Subject to subsection (3), the Regulator may issue an order to require a dominant service provider and other specified service providers to prepare, file or otherwise participate in the development of a cost study of the dominant service provider‟s telecommunications services if the