我不想把客户吓死

我们的产品是医用利器盒，我们给客户报1.3美金的价格，但是客户说我们的产品高度不够，如果达到客户所要求的高度就需要新模具，客户要5000pc，数量不大，而且一直强调要便宜的价格，但是我们新的模具费用需要8000美金，他一定不会支付的。我的问题是，我该如何跟客户说呢，模具的费用该怎么谈呢？如果我跟他说8000美金的模具费，他一定被吓死了，我也不想把客户吓跑啊？怎么？ 怎么？谁能给我出出对策啊，急！以下内容是客户所说： LNS-R8 model is ok but height must be 44 cm. Maybe we could sell the 8 lt further on.For the 44 cm H customer purchase is only 5000 pcs and I do not think that we can afford the new mold opening. You could quote using recycled PP or HDPE red color in order to get a lower price. What is the price for open a new mold? And the delay? Pls send us more detailed pictures of the LNS-R8 model.