勉べん強きょう代だい

noun

cost of a lesson learned; price of a life lesson

Colloquial expression for the price paid (money, time, or trouble) for a valuable lesson, often from a mistake or failure.

• 詐さ欺ぎに遭あって大たい金きんを失うしなったけど、いい勉べん強きょう代だいになったと思おもう。

  I lost a lot of money in a scam, but I think it was a good price for a life lesson.

• 失しっ敗ぱいは勉べん強きょう代だいだと思おもって、次つぎに活いかそう。

  Think of failure as the cost of learning, and use it for next time.