I wanted to say this so badly. Glad you did.

Are you only sticking around because you've already paid, and you at least want to get your money's worth? It just seems crazy to me to not want to talk to any of your sisters about this. I would be DEVASTATED if I thought I had to drop, and I would definitely feel comfortable enough to confide in at least one sister about it.

I also wanted to say this. But it would have been a little bitchier coming from me. :)

ASAP.

Don't let the door hit you on the way out. Maybe your chapter has someone in the wings that would love to be a member. Give them that opportunity. Get out now.

I suggest that you look at all the reasons that you want to leave your sorority. Everyone on here has given you great advice as to how to work out the problems that you are facing (financial) and yet, in your refusal to tell the whole story, you only dismissed what people were saying.
In doing this, it seems that your loyalty to your sorority was only superficial in a lot of means and manners and that's what you're presenting on this board.
I think you need to stop and look at yourself in a real manner and make decisions about yourself and your needs. Don't end up pulling a Madoff!

agreed. it would be nice if you spoke to your big sister and the treasurer and/or president to tell them you are quitting, but honestly, it sounds like your mind is made up, you don't want to try to work things out, so you should resign asap.