wait... you would spend 500-1000 for a codex?
I think you would be better off buying one of these two things:
[url]http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat1090032a&prodId=prod209 0137a[/url]
[url]http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat1090032a&prodId=prod209 0147a[/url]