Traditional theory puts forwards that real exchange rate fluctuations should result from the changes in the relative price of non-tradable goods since tradable goods' prices are to equalize among countries due to the law of one price. However, significant number of researches reported that in many cases, the contribution of tradable goods' prices is not negligible, or even surpass that of the non-tradable goods' prices. This paper studies the relation between the real exchange rate and relative prices for Turkey. The relation is found to be stronger with the relative price of tradable goods, unlike the traditional theory. But the proportion of the fluctuations in real exchange rates accounted for by relative non-tradable goods prices has increased in recent years. These findings imply the real exchange rates in Turkey to be driven by nominal factors, rather than real factors until recently.