I know that I am an impulse buyer. I will be one move away-can SEE the winning move-and want to buy that move so I can win the level. Because of this, I have my phone and tablet set up so I can not purchase anything on impulse. I have password protected my account and absolutely can not purchase on impulse from a game; in fact, I don't think I can purchase from a game at all. I am glad I did this because it has saved me from getting that .99 move and from contributing to that developer's income on more than one occasion