Off topic but...

Cut the membership cost in half and you will more than double your membership; not because it's all about costs and benefits but because it will say something about the organization and its ability to change for the better. The key is to create an organization that people will be proud to be a part of. You don’t do that with coupons. If you have to present someone with an argument explaining why they should join you’ve already lost them. You need to connect on an emotional level.