Mrs JP has wanted one of these for ages and I usually have some winter project on the go so I am thinking of building one in the garden.

I want to make one a bit like this: [url=http://www.traditionaloven.com/building/home/round_oven_built_in_perth.shtml]Pizza Oven[/url]

The main issue after my building ability will be sourcing materials and refractory bricks seem to be expensive on the net. Does anyone out there know where to get hold of refractory bricks at a good price? Can I use second hand ones?

Has anyone tried this and if so any tips would be welcome.