From the US Mensa website:
- This November and December, you can qualify and join Mensa in one easy
step! If you submit your qualifying test scores and your first year's
membership dues before December 31, 2012, you'll pay only $84 — we'll
review your test score for free and extend your membership through March
31, 2014. You'll automatically become a member upon qualifying, and
you'll save money by having your test scores reviewed for free!