I'm not a charm pack kinda gal... even less inclined to buy batiks that way. There are some really dud batiks and I would think it would be hard to display what the charm pack contains. That is the same issue I have with Jelly rools of batiks , you really don't get a good look at the contents , even less with a charm pack ... because typically on line retailers don't show the what in it. I was really interested in a Moda charm pack once ... had to go to 10 different sites to get a real picture of the contents.
But the other side of that coin is that I have seen so many struggle trying to put together more than a few batiks , that pre-grouped fabrics are popular for that reason. So the other side of me says that if you have a market for charm squares in general , there would be a market for batik charm squares.