I'd be willing to bet a week's pay that:
1. The baby is a girl (no parents would sell a boy).
2. The buyers are brothel owners or will sell
the girl into prostitution in good time.
Johns in South Asia will pay a pretty penny for the
pleasure of deflowering an underage girl.
It wouldn't make much sense to buy an infant for prostitution and go through all the trouble of raising it when there is a surplus of children immediately available for prostitution.
The movie Salaam Bombay was pretty much an illustration of that story - and it is realistic.