Get a new Costco membership or upgrade for $55 via Zulily. Along with the membership, you'll also receive $50 worth of coupons including a free rotisserie chicken, free 48-pack of batteries, free 35 count case of Kirkland Signature water, and more. This makes the value of this deal $110. The membership cards and coupons will arrive in the mail. You can also choose an executive membership for $110, which is valued at $160 with the coupons. Current members can use the card for an upgrade - it cannot be used for renewal. Please note, you must be a member to access the sale, but sign up is free and easy. There is no sales tax (except KY, NV, OH, WA).