比较便宜用英文怎么说

"便宜"的英语表达是 "cheap"。

其来源于古英语 "ceap" ，源于古德语 "kaup" ，意为"买卖"。

例如：

This dress is cheap. 这件裙子很便宜。
I always buy my clothes from cheap stores. 我总是在便宜的商店买衣服。
The hotel was cheap, but the room was dirty. 酒店很便宜，但房间很脏。