Between 7 and 22 September, any person who joins the National Bone Marrow Registry ONLINE is going to have the 52$ fee waived, it will be sponsored by the NASCAR Foundation.
http://www.marrow.org/HELP/Events/NASCAR/index.html
Actually, joining online is the easier way to do it, you just fill up a registration form and they sent you a kit containing a cheek swab.
Sandra