Ruling on buying tickets for sports games and concerts then selling them for a higher price
The ruling on selling tickets and making a profit on them is based on the ruling on going to those places for which you bought the tickets. If it is permissible for you to go and watch, it is permissible to buy the tickets and then sell them at a profit after that. If it is not permissible for you to go to those places because of the evils and haraam things in them, it is not permissible to attend them for free and it is not permissible to buy tickets for them and it is not permissible to sell them to anyone, even if the one to whom it is sold is not Muslim.
Based on what you mention of examples (matches and concerts), these are – in most cases – places that it is not permissible for a Muslim to attend or watch what goes on in them, because it involves obvious evils.
But in the case of sports, there is hardly any game that is free of uncovering of ‘awrahs, mixing of men and women, and neglecting Islamic duties, along with the presence of other evils that are obvious to anyone of sound mind and reason. One of the most famous of those sports is football (soccer). The rulings on this game have been discussed in great detail by Shaykh Dhiyaab al-Ghaamidi (may Allah preserve him) in his book, Haqeeqat Kurrat al-Qadam (The reality of football), in which he mentioned forty-one shar‘i reservations about this game in great detail. The one who wants to know the reality of this game and its evils should read this book.
For the ruling on watching sports matches and sports channels, the evils involved in them, and the ruling on supporting sports clubs, please see the answer to questions no. 95280, 82718, 84291, 75644, 22636 and 22305.
With regard to concerts, if you mean those concerts in which men and women mix together, and in which there is music and singing and wonton displays, it is not permissible for the Muslim to attend them or sell tickets for them, as is the case with regard to any place in which Allah, may He be exalted, is disobeyed.
The Muslim should be keen to ensure that his wealth is halaal. The Prophet (blessings and peace of Allah be upon him) said: “Any body that has been nourished with haraam, the Fire is more befitting for it.” Its isnaad is jayyid. See Silsilat al-Ahaadeeth as-Saheehah, 2609.
And Allah knows best.