This discussion may contain spoilers!
Now throughout the episodes, Bigby always has (or aquires) money.
In EP1 you can either give money to Faith or pay for the damage over at the bar.
In EP2 you can get money from either Dee or from the locked box at the nightclub and pay nerrisa the money.
In EP3 you can get the money from either Crane's appartment or The Twins' Office, but I got no clue where it is used. I thought that you might be able to give the money to Aunty Greenleaf as either a way to persuade her to work for you, but she did that freely.