“…This issue has remained one of the key interests of the governments and policymakers especially in an open economy where the bilateral exchange rate variation is high. From both theoretical and empirical viewpoints, exchange rate variation is connected closely to prices (see Adolfson, 2001; Balcilar, Roubaud, Usman, & Wohar, 2019; Campa, Goldberg, & González‐Mínguez, 2004; Devereux & Engel, 2003; Gagnon & Ihrig, 2004; Lariau, El‐Said, & Takebe, 2016; McCarthy, 2000; Taylor, 2000; Xu & Bernhofen, 1999). In Nigeria, between 1985 and 1993, the currency depreciated on average of 71% annually based on the official exchange rate, while in the parallel market, the average depreciation amounted to 114%.…”