He made a counter-offer to the seller's price.

他对卖家的报价提出了还盘。

The buyer was not satisfied with the initial offer, so he made a counter-offer.

买家不满意初始报价，于是提出了还盘。

A counter-offer is a rejection of an offer

反要约是对要约的拒绝

One way an offer can be rejected is if a counter offer is made.

拒绝要约的方法之一就是提出反要约。

It is a refusal of the offer which will be invalid and unbinding once a counter-offer is made.

还盘是对发盘的拒绝，一旦作出还盘，原报盘即失效而失去约束力。

Your price is too high to interest buyers in a counter-offer.

你的价格太高，买方没有兴趣还盘。

Your price is too high to even interest buyer in make a counter offer.

你方价格太高,买主连还盘的兴趣都没有.