It seems like the stores are really different depending on where you go. Some have coupons, some don't. Some honor fabric coupons for bolt batting, some don't. Discounts given for end-of-bolt fabrics are different.
One store I go to insists on separate purchase ring-ups if you're buying two items with two 50% fabric coupons (one from the in-store flyer and one from the mailer), or if you're getting two items with two 40% off coupons from Hobby Lobby.
I suppose the manager has a lot to do it, and also how much competition is in the area. I'm also starting to believe that the individual employees have a hand in this. I wish I had a smartphone.