Puma is 40% off sitewide with code PUMANOV. Some shoes are on sale for $25, making them as low as $15 after coupon. Plus 9.5% ebates if you use that.
Zara (which rarely does coupons, so I always stock up) is 30% off sitewide. H&M is 30% off sitewide plus free shipping with code 3238 (Remember, H&M doesn't always list their sale items with their regular price items, so you have to look at their sale items separately).
ETA: JCrew is now 50% off with code TGIF