I like the move, but I think that would be better for a long-term game.
I'm running a one-shot at a local minicon with a casino theme. I don't want gambling to be a major part of the scenario, but I'm sure someone will want to have their character go gambling as a means to scrounge up barter.
In a way, the barter move, "when you make it known you want a thing and drop jingle" is kind of a gambling move in a way, and I was trying to tweak it into something else to fit the scenario...
But maybe I'm overthinking it, and should simply make up something on the spot, like have it be a do something under fire roll.