Charge per unit, also known as rate or price per unit, is a common term used to describe the cost of a single unit of a product or service. However, there are several other synonyms that can be used instead of charge per unit, such as cost per item, price per piece, unit cost, unit price, or per-unit charge. These terms are commonly used in various industries, including manufacturing, retail, and services, to help determine the price of a product or service based on its individual unit cost. Each of these terms carries a slightly different connotation, but they all describe the same basic concept of the price paid for a single unit of a good or service.