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Have you used the segwit address for your transaction? If so, such a low fee (747 sats) per transaction is typical as long as the mempool isn't overloaded.
Yes I did. Mempool has been almost empty the past couple of days/weeks that's why I asked if they can have their wallet provider review the fees every now and then.
However, I think betfury and other gambling sites won't bother about it.
Yeah. Betfury has been one of the most active in implementing new deposit/withdraw options though. They are certainly capable to make quick changes to the fees.