Kmart offers the Kids Only! Sit N Store Disney Cars Chair, model no. 47888/58510, for $14 plus $8.99 for shipping. That's $16 off list and the lowest total price we could find. It measures approximately 14" x 13” x 21” and features a large storage area under the seat.
Of note, Shop Your Way Rewards members will earn a Kmart credit with this purchase and may be eligible for additional credits and discounts.