How much does it cost per transaction?

I'm curious, can you provide me with some insight into the cost of a transaction in the world of cryptocurrency? Is there a standard fee that applies to all transactions, or does it vary depending on factors such as the type of cryptocurrency, the network congestion, or the size of the transaction? Understanding the costs associated with each transaction is crucial for both individuals and businesses looking to navigate the world of digital currencies. So, could you elaborate on the typical expenses involved in a cryptocurrency transaction?