'Greedy' is not really the first word that comes to mind, but - yes - I suppose he is that, too.
How is it possible that there are people who can be taken in like this? How can you be capable of holding down a job, taking out loans from a bank, flying to England - how can you even be capable of answering email or finding your own front door to get out of in the morning? - without knowing that Nigerian spam is Nigerian spam? How can your family and friends fail to stop you from doing such a thing? It boggles the mind.