Couple of things here-
First of all many of the big state U's have houses that were built back in the early 1900's and could not possibly be replaced today for less than a few million. Michigan, Indiana, Illinois, Mizzou, Colorado, on and on.
I was in one of our chapter houses in the upper Midwest and their annex was designed by Frank Lloyd Wright!
Some of the fraternity houses on the drawing board for the new Greek Row at Florida State will be about 3-4 million. When you are building a house these days for 40 or 50 people, you are committing to that kind of money.
Dues are all over the map at Texas for Fraternities and Sororities too. Some of the sororities have much lower dues cause their houses have paid off their mortgages.
As far as "rich" houses, if given my choice of a house with rich kids or rich tradition and history, hmmmm, let me think.
OKAY I THINK I'VE CHOSEN NOW. GUESS WHICH ONE???!!!