Comprised of 52,637,000 sq. acres, or 82245 mi² of unbridled consumerism, the Superduper Mega Superstore is is the largest supplier of everything in the Tri-State Area. It's stationed in a large, mall-like structure that has enough space to fit the state of Kansas under one roof.
It made its first on-screen appearance in "Vanessassary Roughness" when Phineas, Ferb, Candace, Stacy, Perry, Buford, Baljeet and Vanessa became involved in an endeavor to acquire a rare but commercially available chemical called Pizzazium Infinionite.
Aside from the contended chemical, the mall's other known products include Potato Salad Ingredients and Swiss Army Knives.