sorry, no, i'm not out west. you might be
better cost wise to make them yourself. both forms
and imprints are not that hard to do and you can
get premix by the bag for about $5/80lbs that should
make a half dozen to a dozen squares.
then you can also add your own colors.
we've used all sorts of things and have not had
problems with cracking. i think if you set them
correctly they won't crack easily.
good luck,
songbird