 A different kind of reason for treating egg sharing more favourably than egg selling is based on the idea that egg sharers’ motives will typically by morally preferable to those of egg sellers. In particular, it has been claimed that whereas egg sellers are typically motivated by the desire for money, egg sharers act partly out of a sense of solidarity with potential recipients—in particular because both the sharer and the recipient are in similar positions. Both need, or want, infertility treatment services in order to have a child (HFEA 2011; Prainsack &amp; Buyx 2011).