Joann's used to reinstitute the regular price on sale items so you could use your 40% or 50% coupons which are good only on regular priced items, but they stopped doing that for a couple years now.
JoAnn's used to have a 10% off Seniors' day every Wednesday, but they dropped that about four years ago. the only way to get the extra 10% as discussed here is through AQS, which is a good deal. It has saved me a ton of money over the years.