a good ace-jack bonus promo?

[CeleTheRef]

hi all! it's my first post here

an online casino here in Italy is having a promotion on their live €25 blackjack table

if the player is dealt an ace-jack blackjack, the player gets a bonus equal to the original bet.
if both the ace and the jack are of spades, then the bonus is 10 times the bet instead.

the bonus is of the "sticky" type

the standard rules are:
8 decks
dealer stands on soft 17
dealer checks for BJ only with an ace up
double on any two cards
no double after split
no surrender


is this promotion nothing to be excited about, or should I play it any time I can?
thanks for your suggestions!

[ZenMaster_Flash]

This is a poor game, but . . .

On average you will get a BJ once in every 22 hands.

A negligible percentage will be pushed.

One of 4 BJ's will be composed of an Ace and a Jack.

That brings us to 1 in 88 hands.

Therefore you gain ½ an average bet that often.

Presuming that you mean that you get 2 to 1 on the Ace / Jack Blackjack.

1/64 (1.6%) of that ~ will be Ace / Jack in Spades.

That is in 1 in every 1,408 hands that you will earn a bonus of 9 units.

Dividing 1 average bet by 1,408 yields 0.06% .

The simplest way to look at this is to estimate the House Edge at 0.60%

and adjust that by "giving back" 1/16 of the value of a Two to One Blackjack payoff.

According to QFIT … Blackjack pays 2:1 - Advantage is 2.25-2.32.

e.v. is 2.30% / 4 That equals 0.58%

Add 0.06% for the Spaded BJ and we can round (up) to .64%

If my figures are correct, that leaves the player with a minuscule "advantage off the top"

This game looks like it is good to play if the penetration is reasonable and tables are uncrowded.

This is just enough to sufficiently improve a shoe game with NDAS, 8 decks. No LS. No RSA.

Question: Dealer does not check for BJ with a 10 UP. Does player "lose all" to a BJ ?

[CeleTheRef]

thanks for your quick response.

just a few examples to make it clearer:
if I bet €100 and I win with a non-spades AJ I get €250 plus a €100 bonus.
if I bet €100 and I win with a yes-spades AJ I get €250 plus a €1,000 bonus.
if the dealer also has a blackjack, the bet is a push but I still get the bonus.

the casino claims that the house edge of the regular game is 0.72%, but I'll check better next time I log in.
sadly, the penetration is 50%.
and yes, players "lose all" to a BJ.

[hitthat16]

Wait... Do all blackjacks normally get paid 3:2, or do you only get a bonus for blackjacks with a jack???

If only with a jack, then run away as fast as you can and don't look back!

Edit: Never mind. I read the post incorrectly.

[Nyne]

The fact that this is a sticky bonus makes it worth very little. If I understand right, you would have the $100 sticky bonus in your account as well as perhaps $1000 or more of your cash. Having significantly more of your cash tied up than the sticky bonus is worth makes it difficult to extract value from the bonus. I think this is probably a pass.