DSANA membership fee is $75 per farm (or company or organization). Depending on where your farm or company is, your options are either $75 USD for American or any other non-Canadian members, or $75 CAD = $58 USD for Canadian members. Memberships will renew annually, on July 1st of every year. Your DSANA membership is a "bundle", in that you can have up to 5 members of your farm, family, or organization under your one membership umbrella. To add your farm's additional members, click on your log-in name on the top menu bar (to the right of the facebook icons), and it will take you to your membership profile. Scroll down on that profile page, and you will see an "Add Member" button under the heading of Bundle Summary. Click the "Add Member" button and fill in the information about the additional members of your farm, family, or organization.
If you are also wanting to sign up for the Symposium, you will have to do this in two stages: first become a DSANA member and pay the membership fee, and then go back and register for Symposium. (This means you cannot sign up to become a DSANA member and register for the Symposium at the same time. You will have to join DSANA or renew your membership separately, before registering for the Symposium. A bit clunky, but so it goes....)