I think that your quilt was worth way more than you sold it for. But, when it comes to family, it is hard to charge what the quilt is worth. Most people have no idea what fabric goes for these days.
I sold a couple purses (6) and a baby quilt this last fall. I figured out what I made an hour and it surely made me sick.
I never set out to sell them, friends just kept buying them when I got them made. It put me behind on my christmas gifts a little, but, that is ok. Friends are more important, right?