Something I just discovered - can't get rid of maintenance costs with Wonders!

[The Rusty Gamer]

One of my Civ 2 strategies was to build the Pyramids and then sell the granaries and thereby cut maintenance costs. Maybe others already know this, but I've only just discovered that you still pay the maintenance costs on whatever city improvement the wonder represents. Probably better for game balance really, since those wonders weren't supposed to be there to give a financial bonus.
Anyway, I just thought I'd mention it FYI if you didn't know already.