(Act 1) 22. Charley says, "To hell with it. When a deposit bottle is broken, you don't get your nickel back". What does he mean?

Charley says this in reaction to Willy's announcement that Biff is going back to Texas. Charley is simply telling Willy that he can't fix everything. He's done his best and it's over. Biff needs to tke charge of his own life.