The cost of Aluminum Composite Material (ACM) panels can vary widely based on factors such as quality, finish, and size. Typically, ACM panels are considered a cost-effective solution for both ceilings and facades due to their durability and low maintenance requirements. They are often more affordable than high-end materials like natural stone or solid metals, offering a modern aesthetic at a more reasonable price. However, installation costs and any customizations can affect the overall expenditure. It's important to consider the long-term savings in maintenance and energy efficiency that ACM panels provide, which can offset the initial investment.