highway robbery
公然索財，敲詐勒索
口語·抱怨價格過高
英文釋義
an outrageously high price for something; an unfair or excessive charge
例句
Twenty dollars for a bottle of water? That's highway robbery!
典故來源
源于18-19世紀公路上強盜攔路搶劫的歷史，后比喻價格高得離譜。