Duelbits 20k blackjack promotion is bullshit. The promo only runs on the duelbits branded Evolution blackjack table for 5 hours a day. The promo runs 16 days. That's 80 hours total promotion time to give out 20k. This table is dealer shuffled which takes 5+ minutes depending on speed. At best you can get 2-3 shoes a hour. Lets just assume the high end 3 shoes a hour which imo seems unlikely given full tables and some time each hand to deal and players make decisions. Most of the people will be betting under $25 which gives a prize of $25 and some will get $50 for bets over $25 if they get the special card in their hand.

Even if all the players won $50 thats $12,500  maximum payout at 3 shoe a hour.

They are liars it is not even close to a $20,000 promotion. More like 5k.