If it's such a great idea, why don't you set it up for Indian people in India and see how that goes first? Why do you think it's more appropriate to create the market within the richest country in order to attract would-be donors from the poor countries? It might be worth pointing out that the philosophical trend in western society has historically been about moving away from institutional caste systems and toward one of equalization. I really suggest that you expand your understanding of Western mores before making further proposals to market the living bodies of your erstwhile compatriots.