GEEZ, my lfs had 240's for $1300CDN, and i thought that was steep, i wanted to make a sweet 8'X4'X2"deep and the 3/4tempered glass, 1"regular or 1.5"acrylic would hace cost the same, about $3000-$4000 for all 5 pieces.
Have you concidered making it from acrylic, like 3/4 cellcast?