Which is cheaper and easier to build and cheaper 10'x12' storage shed or a 10'x12' building?

Some recent wood storage shed plans Tip on Storage:
Question by gsbrown357: Which is cheaper and easier to build and cheaper 10'x12' storage shed or a 10'x12' building?
I'm planning in putting in a 10'x12' wood storage shed. I plan on having it bricked in at a later time to save money. What should the foundation be for the shed initially and how much should each part cost (storage shed, bicked in (with labor), concrete slab (if needed)). The other option is to have a 10'x12' building built

Shed Plans ...