If I had my choice, I would go to Choice Fabric in Tennessee. They are one of those distributors and have deeply discounted bolts and 5 yard flat folds. You need a business license to apply and it is quick and easy. I have gone twice with a friend and the choice changes fast but there is a warehouse of bolts all laid out and easy to see on tables.
Mostly, I am the garage sale, estate sale, etc. person. I have two of these sales this weekend and another onecoming up in August. (Dont tell anyone but she is letting me come the day before.) I wont pay more than $3 per yard at a garage sale and that is for something I consider special.