Baby Gammy: the responsibilities of ART professionals in international surrogacy

The 'Baby Gammy' case has sparked worldwide interest and comment. At the time of writing at least some of the 'facts' of what happened, when, and why remain contested. However, as Sascha Callaghan and Ainsley Newson note in their commentary (see BioNews 766), the case highlights troubling issues that have been exercising the minds of some of us for some time (1-4).
Among the key questions that Callaghan and Newson ask are: whether it is 'reasonable [for rich countries] to outsource reproductive requirements to countries where women from deprived backgrounds can obtain a slice of the baby marketplace?' and 'whether selling reproductive services between countries is moral?'; the latter begging the question of whether selling reproductive services anywhere is moral.