I just got mine in the mail today and its fab! Heaps bigger than I thought. Its mainly baking, breads, snacks etc (not main meals) but also has a section on kids parties and christmas. There is a section at the start that shows you how to substitute and what with, avoiding cross-contamination, definitions etc. I really like that it has recipes like pastry, pizza bases, bread etc. Each recipe has very clearly displayed what it doesnt contain and variations of ingredients.
You can buy them from bookshops for $39.95 or if you are an Allergy NZ member it is $33.95 plus $5 postage.