To ask for price we need these words:

 

THIS / 这个 <zhège      

HOW MUCH / 多少 <duōshao> (doslova HODNĚ+MÁLO)       

MONEY /  <qián      

 

这个多少钱?

<Zhège duōshao qián?>

This how much money?

HOW MUCH IS IT?

 

100

<Yī bǎi kuài.>

100 kuai. (kuai is a colloquial unit of currency, lit. it means PIECE)

100.

 

Přeložte: IT IS EXPENSIVE, I DON’T WANT IT.  (we don’t need the word IT here)

key

很贵,我不要

<Hěn guì, wǒ bù yào.>