The other side of it is I personally have been burned by doing someone a favour just for them to take advantage of it. I remember selling one rifle to this one guy who was very interested in it. He didn't have much for funds but it was the same time of rifle his family used back in WWI and was very interested in the history of it so I sold it for what I had in it (even though the price had gone up significantly). Not even two weeks later he had it up for sale for twice what I sold it to him for. Leaves a bitter taste in your mouth afterwards.