The fee they charge is actually the amount of tickets you have to buy from them. So when you hear "it cost Pitt $50K to host a game," that means they had to buy X amount of tickets.
That is incorrect. Teams are charged $50,000 for a CBI game. Similarly, the CIT charges $30,000. The people who run the tournaments do not care, not even one wee little bit, how much the schools charge for tickets.
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From a couple seasons ago:
"UMKC athletic officials say the school paid $40,000 to CBI, which is owned by the Gazelle Group based in Princeton, New Jersey, for the right to host a first-round game.
Other schools in the CBI this year, including the 'Roos second-round opponent Wyoming, confirm they also paid $40,000 to host first-round games. Teams like Wyoming that host second-round games will pay another $40,000 to CBI, bringing their two-game total to $80,000.
For its game Wednesday, UMKC played at Swinney Recreational Center. (UMKC normally plays its home games at Municipal Auditorium, but it was booked for the NAIA national tournament.)
The school gets to keep ticket sales and concession receipts. According to the athletic department, there were 1,128 fans in Swinney for the game. UMKC says it charged $15 a ticket but students got in for $10. That's about a $20,000 gate."
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Or from a story from when the Hoopies played in it:
"The CBI is a pay-to-play tournament, meaning you play $50,000 to play in the first round if at home, the visitor pays less, and the price goes up with each round but
the school gets to keep the revenue from the game from ticket sales, concessions and any money earned through media."