[George83728]

> If you start from first principles and you compute it as "2.5 hours of entertainment in a climate controlled and comfortable environment with refreshments", it doesn't feel unreasonable to put it at 30$ (per person): that's in line with how much other comparable activities will set you back (escape rooms, paintball, whatever).

When I was a kid, my family didn't have AC so on hot summer days my mother would take us to a bookstore. Free AC and entertainment for hours, plus a few dollars for lunch (not in the bookstore, but nearby) and a few dollars more for the books we'd inevitably buy at the end of the day. These days, bookstores are mostly gone but public libraries have AC now so it's gotten even cheaper.