Amazon sells stuff for more than they pay for it or as they say product profit. But it costs lots of money to sell that stuff warehouses, servers, people after

Amazon sells stuff for more than they pay for it or as they say product profit. But it costs lots of money to sell that stuff warehouses, servers, people after you back out those costs they barely make any money at all. After costs Amazon make less money per $ sold than the wal-marts of the world.