I think we can reference to another game's tournaments rules, I think it's good, no physical consumption, but can give some ticket's income less than another type match.
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Credit tournaments
Credit tournaments are tournaments with the possibility to win credits. Every team that enters such a tournament must pay an entry fee. The entry fee is set by the founder of the tournament and the credits collected from the entry fees will form the prize pool. The total amount of credits from entry fees is reduced by a 10% service fee. The prize pool will be divided among the top teams based on the system predetermined by the founder. Apart from this, the founder may voluntarily donate a certain amount of credits that will be added to the prize pool. The service fee does not apply to the donation from the founder.
The creation of a credit tournament costs 50 credits. This fee is not added to the tournament prize pool. The founder selects the distribution of prizes, helpers, entry fee, number of teams and groups, playing format, starting date, match days and he/she may even set the distribution of teams into groups or pots. The founder has the right to reject any team that signs up for the tournament. The founder also has the right to have the organization fee partially refunded (maximum 40 credits), but only if the tournament starts successfully. The requested amount of credits will be deducted from the tournament prize pool.