To add to the Sac thread, there is a great Mediterranean Market (that's the name too) on Fulton Ave in Sacramento, tons of Middle Eastern groceries and products, a small deli section with all kinds of fresh olives and cheese. If you are out in the North/Roseville area, there is a smaller but equally well-stocked one on Harding Blvd in Roseville. The Roseville shop for example had mastic when no one else around did, if that says anything.