Frugal reader Julie said that Kellogg's Raisin Bran Extra! has an on-box rebate to try it for FREE. She found it at her local Fred Meyer in Kirkland, but it could be at any store.
Julie said, "Well, it technically costs a stamp to mail in the rebate form. Okay, 44 cent cereal. It's a small box, but that still makes it really cheap!"