How can you persuade a customer to buy the product?

you have to be honest with the customer. talk about advantages and the quality of the product, how is the wide range of your product , product differentiation than others.

 

first there is need to understand how the product meets a particular need of the customer differently from other similar products. once this is realized then you can position the product as a best solution, 

You must have the honesty, the desire to sell, the firmness, and the honesty so that you can make the customer trust you or he will not make the decision to buy what you sell.