One-price shop
一口价

How much is all together?
一共多少钱呢？
Let me see. The bell-bottom pants are $90 and the coat is $120. It comes to $210.
我看看，喇叭裤是90美元，衣服是120美元，总共是210美元。

Is it possible for you to reduce the price?
能不能便宜点呢？
I am sorry. It's a one-price shop.
抱歉，商店里的东西都是一口价。