Target has a sale on LeapFrog Tag Books this week for $9.99 each. Use the $4/1 printable coupon from Coupons.com and you can get a Tag Book for only $5.99.
LeapFrog Tag Book $9.99
-$4/1 printable coupon (can print twice)
=$5.99 after coupon
The Amazon deal on Tag Books is still available, too.