 It may be the middle of summer, but back-to-school shopping is in full swing. At Kohl's, Levi's jeans and jackets are 40% off, while Gap is slashing prices up to 50% on back-to-school styles. And if you can wait, experts say you may find even bigger discounts over Labor Day weekend. Definitely not cheap shopping for the kids. The National Retail Federation expects the average family to spend $875 on back-to-school shopping for the summer.