One target is to reduce the cost of exporting goods from least developed countries. "Duty-free treatment" has expanded. As of 2015, 65 percent of products coming from the least developed countries were duty-free, as compared to 41 percent in 2005 - wikipedia 
SDG10 Reduced Inequalities
- wikimedia
> Reduce income inequality within and among countries.
The target of 3 percent was established as the cost that international migrant workers would pay to send money home (known as Remittance). However, post offices and money transfer companies currently charge 6 percent of the amount remitted. Worse, commercial banks charge 11 percent. Prepaid cards and mobile money companies charge 2 to 4 percent, but those services were not widely available as of 2017 in typical "remittance corridors."
# See also