Why did the mining/network fee change?
Network fees change based on how busy the blockchain is.
Gas fees change in real time because they’re based on network activity and demand.
When the blockchain is busy (for example, during high trading periods), users compete to have their transactions processed faster, which drives up fees.
Other factors include:
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Transaction complexity – Simple transfers cost less than contract executions or swaps.
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Network congestion – The busier the blockchain, the higher the fees.
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Priority speed – Choosing a faster transaction increases your fee.
Try transacting during off-peak hours when the network is quieter to reduce costs.