Zulily.com has a current deal on a Costco membership. The price is $55 and includes $50 of coupons for freebies and discounts on items. Some of the free items included are a free rotissiere chicken, free 48-package of batteries, a free case of bottled water and more. If you are already a Costco member, it can be used to upgrade your membership to the Executive membership where you can earn 2% on your purchases.
More details can be found by clicking the link above.