Excuse me , I want to know what's your price per dozen for exercise books ?   15 dollars per dozen   Oh , it's rather too high . We have another offer for a similar one at a much lower price .   However , the quality of our exercise books is better than others . I can assure you that our price is the most favorable . A trial will convince you of my words .   If you can go a little lower , I'd be able to give you an order on the spot .   This price of yours is out of the question . You must know that the cost of production has risen a great deal in recent years .   I hope you'll give a second thought to it .   We'll have to discuss the problem later .   What about if we order a large amount of exercise books ?   Could you give me an idea of how larger an amount you want ?   About 300 dozens .   Then , let me check . For the large quantity you ask , considering the cost of raw materials , I think 13 dollar is our bottom line . And I can assure you this is the lowest price in the market in nowadays . 