It seems like Sam's Club (where I already have membership) usually has some kind of membership promotion or discount available. I'm interested in possibly getting a Costco membership. I've been poking around to see if I can find any kind of discount or deal on the membership, but haven't seen anything yet. Does anyone know of anything? I've looked on Groupon and Living Social (offers expired), Costco's webpage, and a couple other odds and ends sites that post deals. TIA!