Whether simony is an intentional will to buy or sell something spiritual or connected with a spiritual thing?

Objections

Objection 1 : It would seem that simony is not "an express will to buy or sell something spiritual or connected with a spiritual thing." Simony is heresy, since it is written (I, qu. i [*Can. Eos qui per pecunias.]): "The impious heresy of Macedonius and of those who with him impugned the Holy Ghost, is more endurable than that of those who are guilty of simony: since the former in their ravings maintained that the Holy Spirit of Father and Son is a creature and the slave of God, whereas the latter make the same Holy Spirit to be their own slave. For every master sells what he has just as he wills, whether it be his slave or any other of his possessions." But unbelief, like faith, is an act not of the will but of the intellect, as shown above (Question [10], Article [2]). Therefore simony should not be defined as an act of the will.
Objection 2 : Further, to sin intentionally is to sin through malice, and this is to sin against the Holy Ghost. Therefore, if simony is an intentional will to sin, it would seem that it is always a sin against the Holy Ghost.
Objection 3 : Further, nothing is more spiritual than the kingdom of heaven. But it is lawful to buy the kingdom of heaven: for Gregory says in a homily (v, in Ev.): "The kingdom of heaven is worth as much as you possess." Therefore simony does not consist in a will to buy something spiritual.
Objection 4 : Further, simony takes its name from Simon the magician, of whom we read (Acts 8:18,19) that "he offered the apostles money" that he might buy a spiritual power, in order, to wit, "that on whomsoever he imposed his hand they might receive the Holy Ghost." But we do not read that he wished to sell anything. Therefore simony is not the will to sell a spiritual thing.
Objection 5 : Further, there are many other voluntary commutations besides buying and selling, such as exchange and transaction [*A kind of legal compromise---Oxford Dictionary]. Therefore it would seem that simony is defined insufficiently.
Objection 6 : Further, anything connected with spiritual things is itself spiritual. Therefore it is superfluous to add "or connected with spiritual things."
Objection 7 : Further, according to some, the Pope cannot commit simony: yet he can buy or sell something spiritual. Therefore simony is not the will to buy or sell something spiritual or connected with a spiritual thing.