Not quite fair that about selling indulgences.
Just for the record - from a Catholic Answers article on myths about indulgences.
Myth 6: A person can buy indulgences.
The Council of Trent instituted severe reforms in the practice of granting indulgences, and, because of prior abuses, "in 1567 Pope Pius V canceled all grants of indulgences involving any fees or other financial transactions" (Catholic Encyclopedia). This act proved the Church’s seriousness about removing abuses from indulgences.
Myth 7: A person used to be able to buy indulgences.
One never could "buy" indulgences. The financial scandal surrounding indulgences, the scandal that gave Martin Luther an excuse for his heterodoxy, involved alms—indulgences in which the giving of alms to some charitable fund or foundation was used as the occasion to grant the indulgence. There was no outright selling of indulgences. The Catholic Encyclopedia states: "t is easy to see how abuses crept in. Among the good works which might be encouraged by being made the condition of an indulgence, almsgiving would naturally hold a conspicuous place. . . . It is well to observe that in these purposes there is nothing essentially evil. To give money to God or to the poor is a praiseworthy act, and, when it is done from right motives, it will surely not go unrewarded."
(My emboldening)