Is it clear that for every "ether" transfer using "address.transfer(amount)" how much "fee" must be paid? I mean how much is the cost of transferring ether
by address.transfer(amount)
? Is it a fix value for this transaction fee? And is fee
difference with the gas price
of a transaction ? Here is mentioned that
"Only a small amount of gas is sent along (21000 gas)."
Does it mean the transaction fee
is 21000 wei
?