You will still need to play it at least one time to know, which is actually a fair bit of kobans since it's 10x games in one click.
Arguably, you can say that it's the same with Great Pachinko. However, Great Pachinko costs less to play (as long as you have the in-game money), and is deceptive for players who have NEVER played 10x Epic before.
On another note, it isn't hard for this to be mentioned in the Pachinko tutorial too. If anyone skips the tutorial, then that's their problem.