Its the same wallet electrum.. Im sending 0.1, transaction fee is set at 0.000129 but as you can see they increase
why you not make it default fee ? like 10.000satosi ?
I choose 5000satosi for all my transcation at electrum wallet and blockchain
Because transaction fees are based on how much info your transaction is carrying. If inn your wallet the most btc is combined from dust transaction so fees can be overwhelmingly large later if you will be sending btc later. Be wary of that.