Free transactions will always be the number one choice and most preferred by users, who wouldn't like something free, after all? Whether the fee is equal to or even lower than the current recommended network fee, users will still choose the one covered by the casino.

On the other hand, fixed fees are more convenient for casinos from a technical perspective, as it simplifies the coding and integration compared to dynamic fee calculations. But let's be honest, it's also a way for them to earn extra profit.