First things first: several people have (actually) passed after hitting a whammy, so that statistic is sort of false.
That being said, after given this some thought, or a lot of thought, I can totally get behind your idea with $50 as the lowest and $500 as the second lowest. For one, it might give Roadgeek Adam his minimum $500 amount but only when you don’t count the lowest amount as part of a risk. Ten $50 amounts is okay; it makes up 20% of the board. Your reasoning is one I have to respect especially when you factor in the game over the past couple of years. There’s only been one win, while several of people just pretty much play through until they’re out of punches (or until $2500, $5000 etc arrives). Punch A Bunch hasn’t been too exciting FWIW; having a $50 amount would change that. Heck, a $0 slip would really make it exciting (maybe 10 of them or 5 zero, 5 fifty bucks).
One thing I keep forgetting to post about that jhc2010 brought up is there are only 5 $100 slips, so if you think about it, they really don’t need to change much. $250 as the lowest is reasonable, not counting 10% of the board that features $100.
Hopefully I’ll get a thread started in relation to this (which I planned to do in advance but real life happens). However, since this is here, I might as well mention the fact that I’m okay with Punch A Bunch as it stands now, in reference to the dollar amounts. If I were to tweak it, it would be more directed in the number of punches or an opportunity to punch a fifth hole. I’ll admit I wasn’t a fan of losing the second-chance slips at first, especially when reaching the top amount is less frequent than before. I don’t think 4 SC slips are needed. Maybe one (or two); or maybe play the game with 5 SP for up to 5 punches