I purchase QS quality fabrics, theres a couple places I order online, but shop the sale fabrics that average $6-$7 a yard.
Occasionally I have to purchase full price fabrics, $10.00 a yard, but keep these to a minumum.
Quilting is an expensive hobby, I won't skimp on quality fabrics, so I purchase sale fabrics, rather than buy cheaper fabrics. Too much time and work goes into making a quilt to use poor quality fabric and have fabric failure a couple years of use. If I purchase fabric online and if it isn't good quality, I send it back, and make sure I don't order from them again. My LQS no longer has sales, so it's necessary for me to buy online. With gas at $3.50 a gallon, it makes no since to drive all over to purchase fabric. Everyione has their own ideas when it comes to fabric purchase.