Was that psd old website? Quite interesting how prices have changed since then.
Alex i got my catch tank custom made from R-Spec alloy (i think) and was £50. I gave them all my sizes and two inlets for breathing, 1 x 25mm and one with a 8 jic fitting, breather of 15mm, sight tube, sump plug and it has baffles inside. Found them on ebay, if i can find them or their email address i will pass it on.