Found this at Costco--although all of these books are currently available at retail, this is the first I've seen of a set like this, leading me to think it's a Costco exclusive. It includes: Interactive Play-a-Sound Book Look and Find Book Little Sound Book The look and find is like a 'Where's Waldo' style book, and the other two are the books where you're prompted by pictures in the text to press one of a series of buttons that makes a sound. My kid can't get enough of these things. It's very attractively packaged in a sturdy cardboard frame with a plastic insert to protect the front of the books. I've misplaced my receipt, but it was under $20. Legends Bumblebee is in the pic for size reference--it does not come with the set. Here's the back of the set.