Shop signs are everywhere within a business. From the signs above the door to advertise your location, to graphics on a window, even the inserts that display a price of an item or a sale can be classed as a sign.
There are many reasons to have signage on and about your shop, the main one is to help increase the amount of business you do. A professional looking sign outside your shop and clear signage inside will bring more people to you and make their experience inside your shop more enjoyable.