I disagree.... I actually think the minimum value should be lowered back to $50. And then the second lowest value can be something like $500.
I see you sharpening your pitchforks. Hear me out.
Even in 1979, $50 was just a booby prize. $50 was less than what some SPs were worth. It wasn't meant to be a good prize. It was "the obviously bad outcome".
The fun of Punch-a-Bunch is in the "should you take the sure thing or go on knowing you might get much less". For something to be tempting, there has to be something at stake. It isn't tempting to quit with $500 if the worst you can get is $250. It isn't tempting to quit with $1000 if the worst amount on the board is $500.
(This is why the Barker-era distribution kinda stunk, there was no incentive to keep 40 of the 50 slips. Risking $450 for the chance at gaining $9,500? Duh. Anybody would throw that back.)
I want to see, like, ten $50 spots on the board that rear their ugly heads every so often. And once or twice a season or so I want to see somebody throw back, like, $2,500 only to end up with $50 on the last punch. I want to see some bad endings and a little bit more negative reinforcement. Just a little. Just enough to know that it's out there, so that not winning the booby prize feels a little bit more like a small victory. Currently it feels like "you ran out of punches without finding the $25K, so here you go, have some cash." I want to see a little more danger on the punchboard.
"But Plinko and Let 'em Roll--" yes, but those are different games. I'm thinking of what's best for Punch a Bunch that plays to what makes Punch a Bunch fun.