I heard so for accomodation. But I haven't stayed in here. I was staying in Nice and it was so easy to reach here and turn back with train in half an hour. But for the other things like coffee etc. it was not so expensive I think. At least I haven't felt like that. Also we came across with a open street wedding party in Monacco and we had some drinks and snacks from there so I can say that I've spent very little amount of money in Monaco :)))))