ToysNGamesEtc via Amazon offers Prime members the Hide 'Em and Hatch 'Em Easter Eggs 3-Pack for $8.95 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $4.25.) That's the lowest total price we could find by $5. When you place the eggs in water, they crack and hatch pets. This set comes with a bluebird, kitten, and frog.
NessKo Imports via Amazon offers Amazon Prime members the Webkinz Siamese Cat for $2.99 with free shipping. That's the lowest total price we could find by $14. This plush animal comes with a secret code permitting the adoption of a virtual version of the pet at the Webkinz interactive website.