Will you accept to be salesman without basic salary ?

It's a very important question, and interesting as well, cause a company won't sustain without making sizeable and profitable sales... If you are a business owner, one of the best answers to questions on how to manage sales and the sales force you could find is in the book titled "The Knack" by Bo Burlingham and Norm Brodsky (available as "Túi Khôn" in Vietnamese by Alphabooks).