You are lucky if your store will mark the item back to regular price and then take the 40% off. Our store won't let you do that.
I have also found that most of the items have already been marked up 30 to 40% more than I can get it at Hobby Lobby. Example, I wanted some insul-brite, JoAnn's was 6.99, Hobbly Lobby was $2.99. A big differences.
Also, they use the big thumb to measure. I have been shortage as much as 4 inches on 4 yards. Plus lots of there fabric is starting to look like craft fabric. And the notions are the same thing we have had for 50 years. They need to get some new buyers and update there notions and fabric.