“…Although the problem of unavailability of appropriate price data is well-known and has been widely discussed, it has not yet been satisfactorily addressed, to our knowledge, especially in the context of an aggregate import demand function (see the discussion in Ghei and Pritchett (1999)). Some important progress have been made in the estimation of disaggregate import demand under foreign exchange constraint or quantitative restrictions that use the Neary-Roberts (1980) framework where at least some of the imported goods are not constrained (see, Bertola and Faini (1990), and Winters and Brenton (1993)). In contrast, the standard model with income and relative price has been, and still is, the work-horse for modeling the aggregate import demand in developing countries.…”