Inverse demand systems explain price variations as functions of quantity variations and they have properties analogous to those of regular demand systems. The case of meat demand in Greece appears to suit an inverse demand system well. The Inverse Almost-Ideal Demand System (IAIDS) model is estimated on Greek time series data (1958-1994) for four meat categories: beef, mutton-lamb, pork and chicken. Price and scale flexibilities are calculated, and according to our findings, chicken, mutton-lamb, and pork can be classified as necessities, while beef appears to be luxury. Moreover all meat items appear to be own-price inflexible and gross substitutes to each other.
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