Which is the most expensive country?

I guess its diffcult to figure out one. One people claiming one country to be the most expensive country might not have even heard of the other which would be inflated. I guess the best answer could be given by any person who have travelled round the world or the one who keep an eye on economics of almost every country. Unfortunately i don't fall under both the scenarios.

well the most expensive place on this planet maybe monaco,dubai or las vegas or miami....dont know really interms of inflation countries like zimbzbwe,other african countries,Iraq etc maybe

maybe it's dubai.