Let to the buyer know various sense organs that you sell. Except conversation and display of goods, let's it touch goods and if it is necessary, and to smell, taste. Give to the buyer opportunity to check goods in work if it is possible.
Respectively, when offer goods to the businessman, do presentation organized and ordered. When talk to the housewife or the worker, represent the goods in more grounded language and in a confidential manner.
You can claim that often do certain amendments to the address purely intuitively. However the knowledge of the listed above factors and aspiration to knowledge of character of surrounding people will allow you to do even more suitable and effective amendments to communication.
Good place to test these phrases, are the situations which are not connected with commercial transaction, for example, as a party. Here you can experiment various approaches and intonations, to define which of them work for you.