I would have never guessed this book would be such a "hit", until grandparents gave one to our children. They LOVE the book and will spend more time on this book popping the little poppers than any other book. I'd say it's IDEAL for ages 1 up to 3. However, our 5 year old was also popping them quite a bit, too.
Shows as free shipping for Prime Members. I was able to choose slow shipping for $1 digital credit.
According to camelx3 this is the lowest price the book has ever been. Average is $13.92. previous low prices were about $9 in 2011 and $10 mid-2016.
We purchased one of these within the past month for $14.39 to give as a Christmas gift. I just submitted a price match to our CITI Card under their Price Rewind program. And we also bought a few more from Amazon (shows out of stock, but orders are being accepted) to gives as baby gifts.