Always look for free shipping offers if you decide to buy school supplies online, said Rohlena. For example, Wal-Mart, the world's largest retailer, is offering free shipping on school supply items such as calculators, pens, notebooks, crayons and other school supply bundles.
"Freeshipping.org will tell you which websites are offering free shipping for back to school," she said.
Retailers are betting on Facebook to hype their back to school deals.
