I invented a new Casino game "Triple Crown" which pays out 71% of earnings on average. What do you think?

I call the game "Triple Crown". It's a pretty simple dice game.

The bettor rolls 3 six-sided dice. If they fail to roll a set of doubles or triples, they lose the entire bet. If they roll a set of doubles, they win twice the total of the 3 dice. If they roll a set of Triples, they win three times the total of the 3 dice. Max prize is 54 Dollars, or quadruple the initial bet.

Because Casinos are required to pay out an average of 70% of what they take in, the game is balanced around a bet of $13.50, which is the closest round number to paying out exactly 70% or in this case 71%.

Updates
8 mo
I thought of making the game more addictive, by ensuring the Bettor always wins back at least one dollar on the worst rolls. Then the standard bet could be either $14 or $15. I'll research whether this makes more sense.
Updates
8 mo
Alright, here's the new idea. Even "losses" pay out $2. The standard bet is $15 (round number) and the rate of winnings is the same as before. Now the game appears more addictive, because the player never loses their entire bet. The payout is 71.5% on this balance.
I invented a new Casino game "Triple Crown" which pays out 71% of earnings on average. What do you think?
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