Gents, why don't you make your own ceramic?
I have (with great success) made my own with simple modelling clay and a small gas torch.
All I did was to flatten the clay, shape and torch for about 10 minutes.
Make sure you drill all the holes you want after initial torching (about 1 minute). When it becomes ceramic it is a drill bit killer - very very hard! You have to allow the clay to dry for about 3 hours after forming. Torch for 1 minute, drill all required holes, check size etc and continue torching for about 10 minutes. I used standard pottery clay.