I have never experienced it, and I think it may be because of the large amount of value or it's because of the different transaction destination factors from one market to another, and the amount is quite large for transaction costs.
But i sent the same bitcoin amount but i wondered why the fee is more this time,But i want to make sure this is in all the place or in only on only my wallet.I am using coinbase wallet one of the best bitcoin wallets but the transaction made me little worry about it.
so it is,youve sent same bitcoin amount but not the bitcoin value.so when the bitcoin value increase.the transaction fees will increase too.