This report analyzes the landmark case of Australian Competition and Consumer Commission (ACCC) v TPG Internet Pty Ltd. The case involved allegations of misleading and deceptive advertising practices by TPG. The report examines the ACCC's claims, including the discrepancy between headline offers and less significant terms, and the failure to clearly specify prices for bundled services. It details the findings of the primary judge, the appeal to the Full Court of the Federal Court, and the ultimate decision of the High Court of Australia. The analysis covers key issues such as bundling, setup fees, and single pricing, highlighting the court's interpretation of the Australian Consumer Law (ACL) and the Trade Practices Act (TPA). The report also discusses the High Court's reasoning, including its critique of the Full Court's approach to assessing the impact of advertisements on consumers. Furthermore, it provides insights into how a marketing division of an internet service provider could avoid similar legal issues, emphasizing the importance of clear and unambiguous advertising practices. The report references relevant legal precedents and scholarly articles to support its analysis.