We also suggest that interventions providing associated benefits in kind may be less likely than those offering a straightforward financial reward to be perceived as a 'purchase' of a body part: indeed, for egg-sharing we have noted the argument that the benefit being received is not financial at all in nature but rather the opportunity to bear a child. Given that one of the key concerns around any form of non-altruistic-focused intervention is the risk of material being mis- valued, we distinguish between these two approaches through rungs 5 and 6 on the Intervention Ladder. We also.
