One of the local shops has a skinny bolt rack - usually 1 1/2 - 2 yards per bolt - at 30% off. Maybe 15 or 20 bolts.
The other local shop has a rack with bolts 50% off, but you must buy 3 or more yards to get the discount. Probably 25 - 30 bolts on it normally.
So our shops don't have the 'finish the bolt' possibility on just any bolt, but we do have some good bargains. I check every time I go into the shops.