Kmart offers the Fisher-Price Octonauts Kwazii and Slime Eel Playset, model no. V7321, for $5.49. Opt for in-store pickup to avoid the $4.99 shipping charge. That's the lowest price we could find by $5. It includes Kwazii, Slime Eel, a scuba helmet, pufferfish, net, and treasure chest.
Of note, Shop Your Way Rewards members will earn a Kmart credit with this purchase and may be eligible for additional credits and discounts.