$1 is the most I've ever paid, DILE
A place by my work has AFM, TOM, CV, JP, Roadshow, TSPP, Junkyard, Champions Pub, and Dr. Who. They are all set to $.50 a play or 3 plays for $1. Between an occasional match and a free game from a high score every few games I can play for an hour on $2. I can't see them making much on that.
At Sparks Pinball Museum they have somewhere around 48 and they are $.50 for most SS and Alphanumeric and $.75 for most DMDs. They had a DILE for awhile that was $1. When I bring my wife she can go through $10 very quickly!! When I go with my dad we can play for over an hour on less than $10.