The ruling on a seller raising the price of a good while he thinks the buyer will haggle, so he buys it at that same price

Question : Even if he told the buyer it is eighty, while he is selling it for sixty. But it is customary for people to haggle with him until he lowers it from eighty to sixty. So a kind, dear man with a sound heart came and asked, “How much is this?” He said, “Eighty.” He said, “Take these eighty.” Is this permissible or not?

Answer : Yes, it is not permissible. This is not permissible. Rather, we say that it is obligatory for you, if you valued it at eighty and the buyer wants to take it, to say, “Wait. I valued it at eighty and set the price at eighty based on the fact that you will haggle with me as people haggle with me. But since you are not haggling, its true value is sixty.” If he says this and says, “I am satisfied with his price,” then the matter is up to him. But for him to set the price higher than the value based on the custom that he haggles until he lowers it to the value, and then for this person to take it at the price he set, this is not permissible. He must clarify. As we said first and say second, transactions are based on treating people as you would like to be treated. This is the correct position. Yes.