How to ask sample cost

我客户不愿意支付样品和运费这样说的 ：As for the shipping costs, we are unwilling to pay for these.  If becoming a supplier to an established global company is something your company is interested in you will send the sample as requested free of charge.

我这样回复的，
     Thanks for your reply in time .
       I am very sorry that what you said like that .we think as a buyer from any country ,if he is willing to pay sample or freight ,he must have sincere heart to cooperate with our company .
        it is not matter with money whatever 1 dollar or 10,000 dollars ,in fact ,our many clients are willing to pay them if they are interested in our products , also for you ,we don't mean to afford so little money ,but we believe this step is a good beginning with business .

      I know you are a manager in foreign trade department ,please think it over ,if your new client wants  samples from you ,what's your decision of sample and freight cost for buyer ? are they all free for any new client?

      Dear Sir ,I know you have a steady supplier of these products at present ,we still wish to have chances to provide good quality with reasonable price for you .

      Thanks for your suggestion .Wish you a big success in 2009 !

Best Regards