A federal commission is investigating.
Walmart is converting 42 warehouses that normally ship products to its stores so they can also fulfill online orders.
Hair products once sold only in salons are now offered online. Salons are relying on customer relationships to sell the merchandise.
It's a red hot market, with investors and collectors alike.
The company says technology will help it deliver 700 million packages
Summer is the perfect time to get rid of your unwanted items, but is it more lucrative to sell stuff online or at a traditional a yard sale?