Wholesale is large quantity buying.

Wholesaler, manufacturer and retailer have a delivery person. 

Multiple shop chains have fixed rates for all their stores. 

Purchase of goods from a  local shop or a mall or an exhibition are examples of internal trade.

Itinerant retailers are traders who do not have a fixed place of business to operate from. 

General stores deal in different types of goods which are needed by local residents.

Multiple shop is a network of a number of branches situated at different localities in the city or in the different parts of the country.

The biggest advantage of supermarkets is that under one roof we find products for a low cost.

A businessman specialised in one line of product comes under a single line store. 

Buying and selling of goods and services in large quantities for the purpose of resale or intermediate use by wholesale trader