I just saw an ad on Craigs List for an entire skid of firebrick, a totalof 150 bricks for $50. These are Morex Fire Brick. The bricks are in North Lawrence, KS. Just thought I would post it.
http://lawrence.craigslist.org/mat/2800979998.html
http://lawrence.craigslist.org/mat/2800979998.html