ChatGPT said: Customer acquisition costs (CAC) matter in Amazon PPC advertising because they directly impact profitability and long-term business sustainability. CAC represents the total investment required to acquire a new customer, including ad spend, promotions, and related marketing expenses. If acquisition costs are too high compared to the profit margin per sale, even a high sa... https://www.brandscapeventures.com/blog/amazon-ppc-customer-acquisition-uk