I have visted many a fabric shop only to see the same items carried at the high dollar quilt shops for about double the price. I have travelled to Marshall's and purchased the same fabric for $2.99 that I found at 3 local quilt shops for $10+. They all buy from the same wholesalers. Yes, the major fabric companies have company refs that visit the stores with all kinds of sample booklets but they work on commission, too. I noticed one of our higher priced LQS had some of the cheaper printed batiks that normally are $4 on ebay and a little higher elsewhere were marked $10.90.
Whether it comes from a LQS isn't relevant but it being 100% cotton certainly is. Just because the fabric comes from a LQS doesn't mean it is the best quality.