Paying a quarter for each time you play is a great idea. With kids and parties, of course you'd have different guidelines.
About 15 years ago, when I got an Atari Classic games package for the PC (Asteroids, Battlezone, Centipede, etc.), I put a cup next to the monitor and was sure to pay myself 25 cents per play. I did this for multiple reasons;
1) It made me want to try harder (you ever shoot pool by yourself?)
2) It made me not spend too much time in front of the PC
3) It allowed me to 'save' for my next 'toy', whatever that may have been
4) I was used to paying 25 cents for those games!
If I didn't get away from the PC, I saved more money. If I didn't try harder, I saved more money. Unfortunately, that didn't last long, but I do keep and still fill a 5 gallon water jug for loose coin.
With the arcade cab, I think it's a great way to get back into the swing of things. Make the coin drop a special 'fund' (new spinner, trackball, LEDs, etc.)
I've recently added a coin door, but haven't hooked it up just yet. I imagine I will be the only one using it for a while. I can't expect the kids to climb down off the stools every time they need to credit up!
PS I tried reading that article, but it was too painful to get through as the guy was trying too hard, in my opinion.