Trading areas are important when analyzing a potential retail site, because:

A) Since shoppers will only come from your primary trading area, this area needs to be clearly defined.

B) Typically, as you expand out, fewer customers will be coming to you, so you must identify your primary trading area to insure enough shoppers to meet your business goals.

C) Since shoppers come from all of your trading areas equally, it is important to know how far your reach will go.