1 The price is reasonable because the quality is superior.
2 The USdallors is weakening.
3 I will cut the price down if you are going to make a big purchase. Will you please tell me your qrder quantity?
4 You counter offer is too low and we can't accept it.
5 I'll respond to your counteroffer by reducing our price by 3 dollars.
6 We regret we have to maintain our original price