Blades in the Dark does a hybrid model: for small things (the example given is bribing a doorman) the player rolls a fortune roll with their lifestyle quality.
For larger things, there's coin. One coin is "A full purse of silver pieces. A week’s wages." Coin can be spent/sacrificed for significantly larger things than day-to-day expenditures.
A character banks coin in their stash which determines their lifestyle quality and, eventually, their quality of retirement.
It feels much more like a stat to me, but has some of the flexibility of a resource as well.