Let's review. Do you remember how to say "Excuse me ?" Excusez-moi. And how to say "How much ?" Combien ? Do you remember how to say "Costs ?" Coutes. And how to say the demonstrative adjective "this" or "that ?" Ce.
Do you remember how to say "painting"? tableau Do you remember how to say "Excuse me, how much does this painting cost?" Excusez-moi, combien coûte ce tableau? Now you know how to ask for the price in French. And you can move on to the practice. Au revoir!