One of the gyms I go to… wait, all the gyms I go to, on a couple of continents, will only sell you a “day pass”, even if it’s 8pm and they’re going to close in two hours. But several of them will give you a discount on the so-called day pass if you’re in before the rush – 2 or 3 pm.
So the “day pass” is $15/EUR per session if you actually might use it for a whole day, but is $20/EUR per session if you’re only going to use it for a couple of hours.
Big ups to the guy at ARC who only charged me $10 one night when I got there at 8pm. That seemed fair. And only happened the once.