I could NOT find any quarry tiles at any of my stores,even the next town over,30 miles away,did not have them either.Im talking the Lowes,HD and other tile stocking stores.
So I found a 16 inch ceramic pizza stone from a Big Lots store that worked very well for many months.
It cost me 10 bucks.
It did crack into a few places about a week ago,but I think maybe because it was removed out of the oven and dropped too hard down on the counter by the wife when she was cooking something else.
Anyways,just letting you know a cheap stone can work pretty well until you locate your quarry tiles.
ps,forgot to add,K mart sometimes carry them too,but I think they are like 20 bucks or so.