There's a Tilt Studios in the Valley Mall in Hagerstown, Maryland with a large row of pins. They've got the weird card system that you have to swipe, even on their old classic Bally games (interesting to see on a Fireball Classic and Star Trek) The old games are "2.3 units per play" and everything newer than their Metallica is "6.4 units per play."
The value of the "unit" is a quarter. I assume they add the weird decimal value to leave you with *just* enough units left over to justify refilling the card, which is annoying. But that means you're paying something like $2 for a single game of most of the games in their lineup. Luckily they're maintained well, and you get "free" bonus units when you recharge your card with more than $10.