Yesterday we have added an option to deposit with a Gift Card sold on Kinguin - huge marketplace for game keys.
And our stock ranned out just for a nigh time :)
So if you see "out of stock", want other nominals, or have any other questions, ask it here please.
Redeem page is here.
Also note that DuckDice does not add any commission any commission which is on top of your deposit amount in BTC is charged by Kinguin and Payment Processor.