Is a woman entering a shop in the market to purchase items considered seclusion?

Question : She says: Honorable Shaykh, if a woman is with a person who has a shop and she is in the market, is this considered seclusion if she is buying from him?

Answer : No, as long as the door is open and people are passing by, going and coming, no. But even so, we warn against a woman entering a store except with a mahram (a relative one may not marry).