Tracked by Evreward since 2010, Wisdom Panel offers coupons, cash back rebates and rewards, with savings as high as $15 off. Wisdom Panel discount coupons are somehwat rare, available a few times each year, but are often more valuable than similar merchants. Even when Wisdom Panel doesn't have a coupon, you can always get up to 15% cash back, and other great rewards, with every purchase.