I think there is also the "you're just sitting around at home eating bon bons " factor. They think the money they are paying you is a windfall to you. Seriously. I have run into that attitude more times then I can count. Not with quilts but with other sewing. When I was younger I sewed for people to make some extra money. I did new things from patterns, not alterations, although many had body types that needed altered before making the garment, though. And I was cheap. I had a friend that was a real professional seamtress and she stressed to me that I needed to value my time more. I was shocked when she told me she would not thread her machine for less then 7 bucks. And this was back in the 70's.
It is hard to get true value for your time. Especially with crafts or any of that sort of thing. People do not seem to have a problem paying other people a good hourly wage, whether professional or not. My SIL was just telling me the other day that they know a young lady, around 15, that charges 20 bucks an hour to babysit. I guess she is really good and reliable, but 20 bucks an hour is crazy.
So, my point is that since I am home doing nothing but watching tv and munching on bon bons, my time is only worth 50 cents an hour and I should be happy to get that. Of course we all know that is not the case.