Amazon offers its Prime members the Skylanders Giants Battlepack #1
with free shipping
. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $4.98.) That's the lowest total price we could find by $15. Sales tax is added where applicable. It includes Chop Chop, Dragonfire Cannon, and Shroomboom.
Update: Best Buy offers it for the same price.