Although certain categories are exempt from exploitation laws, does this exemption extend to cases where one party exploits another at a higher rate (bitul mekach)? Rabbi Yona and Rabbi Yirmia each offer different answers in the name of Rabbi Yochanan. A challenge is posed to Rabbi Yirmia's position based on another statement attributed to Rabbi Yochanan. Several proposed explanations are offered to reconcile this discrepancy. Additionally, the derivations for the exclusion of these categories in other Mishnaic laws, such as double payment and laws governing the responsibilities of shomrim, are explored.