To go to the Haj, you have to meet certain conditions. One of them, is to write your name on the Iranian Haj quota list that is allocated by Saudis. (sometimes a person has to wait longer for his / her turn)
This advert is from a company who has Haj Ministerial Rights to buy, sell, or exchange people's names on the Haj quota list.
There is an offer saying that if you introduce another person to them, who is already on the Haj quota list, then they reward you with 100,000 Tommans !