So a little background. I have 8 years of professional cash handling experience and as of now work as a banker. That said, I don't think any average joe would struggle with it. You learn pretty quickly how to raise or lower the coin counter by X amount while keeping the total the same, so the game pretty quickly turns into spamming halves until you're close and then spamming nickels and pennies to try to raise the coin amount as quickly as possible. At the time of writing, I'm at level 50 and the game is EXTREMELY tedious at this point. It's too bad flash game devs didn't extensively test their games back in the day cause a qol feature where pressing the number row keys to automatically put up a coin would be nice, so I could just spam the 3 key 36 times instead of having to give myself carpal tunnel doing it with the mouse. The game is not hard at all. The timer gets longer with every level so it's impossible to lose unless you literally try to. Just for reference, by level 50, the coin requirements per challenge is 50 - 51 and the timer for the whole thing is about 15 minutes. FIFTEEN MINUTES. I can take a shit, go to my fridge, eat something, play a full round of shenzhen I/O solitaire, watch a youtube video, and still have more than enough time to complete the entire level without even trying. At this point I'm just trying to see how long I can go until either I get so bored that I can't do it any more or a power outage kills the game, or maybe it crashes or something. If nothing interesting happens by the time I get to level 100 I'll probably just screenshot it to document the self-torture I endured and then quit :)
Here's some footage of me playing level 44 and actually trying just so you can see how much excess time it gives you: https://cdn.discordapp.com/attachments/1087910133851488306/1110453489622077492/meactuallytrying.mp4
Update: I'm now at level 82. Still going for level 100. That's gotta be a world record.
Update 2: I think I beat the game. I beat level 86 and then the game just completely crashed. This is either from keeping the game open for a month with flash being the unstable piece of software that it is, or the game being unable to handle the timer going so high. Since I did notice it got progressively more unstable and laggy the further I went. Enjoy the pacman level 256 kill screen but for pocket change https://cdn.discordapp.com/attachments/1087910133851488306/1119568707400773742/image.png
details: on level 86, the rendering broke completely. Instead of green boxes on finished and blue boxes for unfinished, you can see in the screenshot that it turns black and white. Also, the game doesn't animate anymore, even though flash will correctly scale things if the window is resized. Nothing is animated, so to see what you're doing, you have to minimize the window and then restore it. Upon beating level 86, the game is unable to finish animating the level end card, so it remains stuck, softlocked there for eternity. Also the timer broke. I did the first 8 challenges and then went to work expecting it to time out cause you know, 10 hours is a bit longer than 25 minutes. But it never did. I had to finish the level when I got home from work. I managed to capture footage of it, too. https://cdn.discordapp.com/attachments/1087910133851488306/1119567548996915270/broken-gam.mp4
So I think I can safely say I've beaten the game, and am probably the only person crazy enough to do it lmao.