What are the chances that the battle minigame will be a 50-coin-per-player battle?

In Mario Party 8, the game always shows 50 as if you can bet that high. But in my many tests and conclusions, 50 was never able to be placed as a battle minigame bet. The developers seemed to have put it in there to troll some players (most likely younger kids) into thinking you could bet 50 in a battle minigame. The normal coin counts in battle minigames are between 10-20 and have no effect because of the player's or computers' coin counts.