I forget which maker of batik precuts finally put out a notice that the cuts might not be even. My friend was looking at the Batik jelly rolls, and told me she saw the notice. I don't know if the store put it up or it was on the package. If it WAS on the package, that's good. If you know the pieces are off, you can cut yardage to match and no problem. I bought a roll and most were 1/8 off, which was just enough to mess up a pattern if you cut the other pieces from yardage which I did.
The precuts do look attractive in the rolls or packages, but after I open the package I find many I can't use. There might be 5 different varieties of one color in the pack, but mixing a grayish or magenta hued blue in with a true blue looks off depending on the pattern. I prefer colors to have the same values. If I'm using a warm brown, I prefer all the other colors on the warm side. I like Southwestern colors, and even if the design is made for blues, batiks, whatever, I'll change the colors. My idea of what goes, and the designer's idea are two different things. I'd think nothing of using a Civil War pattern in southwestern colors. That's why we quilt, isn't it?
No more precuts. I only had 3 jelly rolls so I gave most of them to a friend. I'll pick yardage to my taste and often it isn't even the same line of fabric.