Acted for respondent, unled – trade practices – restrictive trade practices –contraventions of ss 45(2)(a)(i) and (ii) and 45(2)(b)(i) and (ii) of the Trade Practices Act 1974 (Cth) and the Victorian Competition Code – respondents connected with supply of unshucked abalone – price-fixing – exclusionary provision – respondents admitted alleged contraventions – pecuniary penalties – agreement as to penalties – factors relevant when fixing penalty – principles governing penalties.