Is there reason to believe that a well-regulated market in organ sales would be safer or preferable to the status quo or does the sale of organs in and of itself violate Kant's Categorical Imperative to always treat others as an end rather than as a means?

Reference:

Kerstein, S.J. (2009). Kantian condemnation of commerce in organs. Kennedy Institute of Ethics Journal, 19(2), 147-169. https://doi-org.libproxy.stfx.ca/10.1353/ken.0.0280