Well, if you want to pay that much for a room, who am I to stop you?

[Mr Hero]

Guest: How much is it for a room?
Me: 109 plus tax
Guest: 190?
Me: No, 109
Guest: (To his partner) Ciento noventa? (190?)
Me: No, Ciento nueve. (109)

Look, dude, I get that you don't speak much English, but even the word "no" should be enough of a clue you misheard me.