“Gas fees” are transaction fees paid to miners on a blockchain protocol in order for their transactions to be included in the block. The system operates according to a standard supply and demand mechanism. If there is a higher demand for transactions, miners can choose to include transactions that pay more, compelling users to pay more in order for their transactions to be processed quickly and efficiently. In other words, when a lot of people are using the blockchain, gas fees are higher. When there aren’t many people using it, gas fees are much lower.