Don't stint on quality. The cheapest route may end up being the most costly one if it loses you a customer. If your budget is limited, consider doing a smaller piece, one with fewer pages, or even an elegant blackandwhite piece instead of four color. Many effective brochures use color for the cover, and black and white inside. Use of two colors throughout is another alternative.
Inexpensive pieces can be just as effective as expensive ones.
A statement true today. Tell the truth. This rule goes beyond purely legal requirements. Today's consumers want the truth, and the whole truth. They want to know your possible drawbacks, as well as your advantages.