Exchange premium is a term used to describe the amount an investor pays to buy a security. Synonyms for exchange premium include purchase price, buying cost, transaction cost, acquisition cost, and investment cost. These terms are all used to describe the amount that an investor must pay to purchase a stock, bond, or other financial instrument. The exchange premium is an important factor to consider when making investment decisions, as it can significantly impact the overall return on an investment. Understanding the various synonyms for exchange premium is crucial for investors who want to make informed investment choices.