"There is no pre-registration again this year, and we have two prices. ADF Members are $60 and Non-ADF Members are $75. Our intention was to have non members become members but apparently this idea is not palatable to some people. We are not forcing anyone to become an ADF member, but this is an ADF members event and we of course strongly encourage everyone to support ADF by at least joining."
Haha. It appears that I am now "some people" :)