Looking for an accurate quote? Providing as much information as possible about your project will help make your quote more accurate. Here are some ideas of information to include in your email:

What do you need?
e.g.
A logo/identity
A logo/identity and accompanying stationery (e.g. business card, letterhead)
CD cover (including disc label)
DVD cover (including disc label)
Flyer/postcard
Poster
Advertisement
Brochure
Booklet
Report / Magazine / other publication
Book

Design
Do you have a look or style in mind for the project?
What size?
How many pages?
Is this project part of an existing series?
Do you have an existing logo and corporate colours that you use to identify your publications and products?
Do you have a collection of images that you use in your publications and products?
Are you thinking of purchasing royalty-free or rights-managed images (e.g. from iStockphoto.com or Gettyimages.com) to use in your publication?

Printing
Do you have high resolution logo and image files suitable for printing (i.e. not from a website)?
Will the project be printed in-house or professionally?
Do you have a printer organised or one that you usually use and trust?
Would you like a recommendation of a printer in your state or territory?
Would you like me to organise printing and delivery of the final product as part of the package?
How many colours will your project be printed in?