 The main reason offered in favour of egg sharing is that ‘sharers’ are exposed to less additional harm and/or risk than donors (paid or otherwise), since they are already undergoing most of the required interventions as part of ongoing treatment. It is supposed to follow from this that incentivising egg sharing (other things being equal) is less morally problematic than incentivising egg donation: either because of the putative wrongness of encouraging people to take ‘excessive’ risks, or because financial incentives may vitiate consent to those risks (Wilkinson 2013).