I voted $40 include postage for a big book. if you have a look at some of the big cookbooks in the shops $40 is very reasonable. I was looking at cookbooks just a few days ago and the Magerat Fulton one was $60 and the donna Hay was $45. That's not inculding postage.
I think the idea of an e-book option for those on a budget is great but I wouldn't get one because I wouldn't bother to print it out and I'm on a plan so i wouldn't want to exceed my download limit.

My order of preferance is
Entrees
Mains
Desserts
Soups
Pastas
Slow Cooker Recipes
Vegetarian
Pregnancy Recipes
Baby / Toddler Recipes
Low Carb Recipes
Low GI Recipes
Gluten Free Recipes
Other

I love the cover BTW.