"following the cliche" what cliche??? Most of the time, they never go back.. the exception is when little kids go to the other worlds in anime, they lose the object that gives them power and learn moral lessons about enjoying their life more... but that's it...
That said, I think bending the money was worse than getting money through the lottery... it's not really cheating and it's not that wrong either. It doesn't do any harm and nobody would know...
Quite being stupid... why... why must MCs be stupid...