The LittleBigPlanet Store is secure. It is the PlayStation Store, but modified to look more like the game's style.
Yes. Just type in LittleBigPlanet. The price I believe at the moment is £23.99.
It is released on the store for a week everytime a new LittleBigPlanet game is released.
From the Playstation Store
You can only download it on the PS Network store or buy it from a store.
They are sold at the Playstation Store
You buy them from the Playstation Store
buy it from the PS Store
You purchase it from the PSN Store.
Some you must buy from the Playstation Store
Buy it at the Playstation Store
Playstation Store
go to the PSN store and buy it