Good luck. I'd go with the advice of $5 / bag, and $15/4 to attract those quilters who love a bargain, which is I imagine all of them. And the half price mark down should be good. It will even be good to put up a sign that says, "Whatever is left after 1 pm will be half price." Yard sales usually have lots of visitors early in the day. You can get shoppers to return if you say items will be discounted in the afternoon.
