Originally Posted by
Semaphore
No. You can enter your initial team for free. If you want to subsequently change your team within the same tournament, that costs 50 koban. Changing your team is mainly for people who have made it to at least the round of 16 to that they've seen the teams of their possible opponents, and see that their current team will lose to an opponent, but but they'll win if they change it. You get 100 koban for winning a semifinal match and 200 for winning the finals, so a change that you reasonably expect will get you a victory in the semifinals is worth it.