Business & farm

from your link, I found this:

 

Nonstore Retailers

- Nonstore retailers sell all types of merchandise using such methods as Internet, mail-order catalogs, interactive television, or direct sales. These types of Retailers should select the PBA associated with their primary line of products sold.
- For example, establishments primarily selling prescription and non-prescription drugs, select PBA code 456110 Pharmacies & Drug Retailers.