Of the donors 76% agreed that kidney sale should be banned and if there was another chance they would prefer to beg (39%) or obtain a loan from usurers (60%) instead of vending a kidney. The goals of vending were achieved not at all by 75% of donors.[5] However another study has been more positive, with 86.5% of donors reporting "complete satisfaction" prior to discharge, and only 1.5% reporting regret.[6]

This is a huge disparity and makes me think something else weird is going on.