I buy stuff from Walmart when it suits what I am working on, Jo Ann's too, I buy what looks like good quality, and both of those carry a wide range of different qualities of fabric.
I just bought everything that I needed at a dry goods store near my town. YES a dry goods store! Did you know that they were still out there?
It is called the Farmer's Store, over 100 years old, has always been in the same family. The recently moved the wedding, formal dresses and shoes to another shop, called that The Farmer's Daughter!