If you're considering buying this game to play because you enjoy the concept of high stakes Vegas action... well, I can't say it's an inaccurate representation of a slot machine, except that payout is a bit more frequent.
What you have here is your standard "no decisions required" game. It's not a game. It's something you watch happen to you.
Just as in the description, players turn over three cards at a time from the deck. If the three you drew form a winning combination, you take all the cards on the table. If they do not, you leave your cards on the table, and the next player takes his turn.
Now, as for the cards themselves, they are at least minorly interesting: This is not a standard deck by any stretch. The cards are half-sized, so as to fit 120 in a standard-sized box, have several suits, and multiple instances of each suit/value. Interesting.
Virtually any game you can possibly think of to use these cards would be more enjoyable than the game itself. It contains all the cards needed for a game of Loco: All that would be required would be a pile of chips. Although it does not have enough of the proper proportion of cards for either Ra or Razzia, rules for a similar game could be crafted using these cards. The cards provide for a wide variety of possibilities, design wise, and the deck is pretty cheap and easy enough to find.
As for whether or not to buy it: If you are considering actually playing 7!7!7!, don't bother. If you have a game design streak in you, pick up a pack or two, and burn the rules.