Constructed in July-August, 2008, it includes about 175 cinder blocks, 50 solid blocks, a few hundred 80 year old bricks (which came from my house foundation when it was rebuilt a few months prior) for the stack, Sandstone for the flat surface/shelf areas, river rock for the front verticle faces, black marble for the fireplace floor, and approx. 650 patio bricks with 8 bags of sand. The Patio edge is roughly 13 1/2 feet long each side which calculates to about 185 sq ft..
EDIT (May 2009): Just had to rebuild the underside of the fire box. The black marble floor that was exposed and had no support underneath, became brittle, cracked, and broke away over the last 9 months and had to be rebuilt with a solid block base under the new fire box floor. Not too difficult to fix, but was still an unexpected expense. (less info)