This is the 145th most frequent Czech word.
kč
"Kč" is the abbreviation for "koruna česká," the currency of the Czech Republic (Czech crown).
In this sentence, 'Kč' is used as the abbreviation for the Czech currency koruna, denoting the price of an item.
Tento produkt stojí 250 Kč.
This product costs 250 CZK.
Here, 'Kč' is again representing the Czech koruna, indicating the amount of money spent.
Zaplatil jsem 500 Kč za nové boty.
I paid 500 CZK for new shoes.
In this sentence, 'Kč' refers to the currency, being part of a financial question.