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Originally posted by: jzaroff
The coupon being worth one betting unit in and of itself is not enough to make it a good play. It depends on how good the D blackjack game is and how long it will take ( on average) to hit.
Well, unless the game is incredibly atrocious (even money for blackjack, double 11 only, no splitting aces etc) I don't think you'll ever find conditions so awful that using the coupon wouldn't be an advantage play.
Busting with 22 comes pretty quickly, I think it'd be very unusual not to experience it at least once playing basic strategy after, say, 50 hands.
I realize I'm not providing any mathematical analysis here the you requested, just suggesting that this coupon should definitely be used, and that if you can fade the disadvantage that the game presents for 50 hands at $25 per, the coupon itself will be worth exactly $25.
Even a 1% house edge on 50 hands of $25 BJ is just $12.50.