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Jyutping siu2 go3 bang1 dou1 m4 dak1
Pinyin shǎo gè bēng dōu wú dé

Definitions (粵典–words.hk)
  1. 語句
    少一​仙都​唔​得​;​一定​要收​全額​價錢​,​通常​喺​賣​家​回​應​講​價​嗰​陣​用
    a statement used in bargaining to state the price is fixed and cannot be lowered; literally: one cent fewer is not acceptable

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Jyutping siu2 go3 bang1 dou1 m4 dak1
Pinyin shǎo gè bēng dōu n2 de

Definitions (CC-CANTO)
  1. not even one cent less, a phrase used to imply that one will not accept any lower offers for their asking price [colloquial]