Neat little story. I can't help but wonder what happens after the act of spontaneous generosity...

Does the shopper go back to his old habit of running up his bill, not learning anything and maybe being bailed out multiple more times by other people? Or does his benefactor give him a stern talking to, after which he uses that professional quality hat to get a new job and take care of his own finances, maybe eventually paying back the woman who bought him the hat?

I kind of like the ambiguity, though. It helps breathe more life into a free-write when it can be interpreted different ways, in my opinion.