你们产品价格那么贵为什么质量那么差？怎么翻译成英文啊

如果用于外贸函电中，我认为英译成：
We were astonished by the great difference between the quality and the price of your products.

When something like
产品价格贵but质量差. Move on, ignore them, do not waste any more time and money on them! If you're a business person, do your due deligence!

Why is your product price that expensive the quality that to miss?