I love pre-cuts. As a newer quilter, I can create a scrappier quilt without waiting years to collect all those scraps! I've worked with charm squares, layer cakes and jelly rolls and don't really have a preference. I like how it's a little bit of the entire line of that particular fabric design. It's a bit of a preview too, as when I find a fabric in the line that I just have to have, I then go buy it in yardage.
I'm afraid I don't understand the comment of paying 50% more for cutting the fabric, I've done the math and it's pretty equal with our yardage prices. I guess it depends on where you are.