Rather than succumb to sale psychosis, sharp shoppers use a keen eye to scout sales. The goal is to hunt for discounted pieces that don't scream "summer 2010" in order to get the most bang for your dollar. Cardigans are always a wise investment since they rarely go out of style. Here are some chic options that are worth adding to your wardrobe to wear now, into the fall and for years to come. But hurry, sale items go fast!