Buying Bitcoin involves paying transaction fees to reward miners for including your transaction in the blockchain. These fees can vary depending on the size of your transaction, how many inputs and outputs it has and the fee rate (in satoshis per byte) at which it is being charged. These are called transaction fees and they’re a part of every cryptocurrency’s operating structure.More info :b3i.tech

Unlike traditional currencies or precious metals, cryptocurrencies like Bitcoin are not physically owned by anyone — instead they’re recorded on the blockchain as tokens that represent ownership of a certain amount of a given currency. Transaction fees are used to reward miners for their work and help prevent spam and denial-of-service attacks on the network.

Bitcoin Buying Fees Explained: What You’re Really Paying

Each transaction is made up of a series of inputs and outputs, which collectively determine the size of a transaction (measured in bytes). The more inputs and outputs a transaction has, the larger its data size. Larger transactions are prioritized by miners in the same way that you would expect files on your computer to be prioritized based on how much they’re being downloaded.

When demand for block space is high, fees can be higher because there is only a limited number of transactions that can make it into each block of the blockchain. This is why wallets and exchanges try to avoid busy periods by batching payments and using second layer solutions like Segwit to reduce transaction sizes and fees.