(a) Each filer that files an electronic tariff under this subpart shall make available to any person so requesting, a subscription service meeting the terms of paragraph (b) of this section.

(b) Under the required subscription service, remote access shall be allowed to any subscriber to the on-line tariff database, including access to the justification required by §221.205. The subscription service shall not preclude the offering of additional services by the filer or its agent.

(c) The filer at its option may establish a charge for providing the required subscription service to subscribers: Provided that the charge may not exceed a reasonable estimate of the added cost of providing the service.

(d) Each filer shall provide to any person upon request, a copy of the machine-readable data (raw tariff data) of all daily transactions made to its on-line tariff database. The terms and prices for such value-added service may be set by the filer: Provided that such terms and prices shall be non-discriminatory, i.e., that they shall be substantially equivalent for all similarly-situated persons.