Interesting topic!
When I went through rush (ahem, many years ago) dues were never discussed until you had signed a bid. Then I went back to help with rush about 2 years ago and every sorority handed out brochures with prices.
I think it's a good idea - you have to know what your responsibilities are in terms of finance - that's part of being a good member. I think the number of people who would choose which one due to higher/lower price is very miniscule. Sometimes though, the rushees don't even have a ballpark figure in their heads.
I don't even want to talk about how I lived in my sorority house (not a mansion-type house) for only $70 more semester (with utilities), than I do in my current apartment per month.
