I rarely ever shop Walmart for fabric as most of it isn't really high quality and I've learned through sad experience that cheap fabrics don't hold up well and heirloom quilts can be ruined quite easily...I do buy muslin and ulitarian things there however, along with notions...
I've found that when I didn't live close to a nice quilt shop that there are literally tons of great on-line shops that will serve us well. It's like getting gifts in the mail, even though you paid for it yourself! LOL!
I had no idea that JoAnn's was owned by Walmart...of course it all makes sense, does it not?