I thought the 150 would be cheaper too. The first selection took me about 3000 to get all three girls which is a pretty good deal. It's why I sunk so much in this time. Just another pachinko I won't be using I guess.
I tried the mythic pachinko and sunk over 14,000 kobans into it and didn't get any girls. I played the 150 game. Is there a bug with it, or am I just that unlucky?