As a newbie, I have only used regular cotton thus far, but am just starting my first flannel-backed large throw as a chemo quilt for a close friend.
i love the feel of it but would not pay twice as much. I think the batik market is niche, and would surmise that batik flannel is even a smaller subset of quilters. Batik flannel at $23/yd ? I personally wouldn't consider it. And from a company I've never heard of? Too risky where color and quality are at stake.