「一口價」

(pos:名詞)
<explanation>
yue:定好咗就唔再更改嘅價錢
eng:a fixed price, no more bargain
<eg>
yue:你有心買嘅話，我一囗價十蚊賣俾你。 (nei5 jau5 sam1 maai5 ge3 waa2, ngo5 jat1 hau2 gaa3 sap6 man1 maai6 bei2 nei5.)
eng:If you really want it, I can give you for a fixed price of ten dollars.