Cheap as chips
物美价廉，性价比高，花少量钱获得好品质。
用于称赞某物性价比高。
英文释义
Good value.
例句
The second-hand books were cheap as chips and in great condition.
典故来源
源自英国俚语，'chips'（薯条）是廉价常见食品，引申为价值高而价格低。