I don't do any SEO or PPC any more so pardon me if this is a well known tool that everyone already knows about.

Pandia.com has a ton of resources - check out their tools section if you have not been there for a while.

If you go about 1/2 way down on this page:
LQQK for: Compare pay per click keyword prices

It queries the GOToast software (if you don't already have it) and gives an approximate bid for most of the PPCs (not Google though.)

Linda Buquet ~ Affiliate Management Consultant ~ Catalyst eMarketing.com
Representing www.5StarAffiliatePrograms.com: DentalPlans|Irv's Luggage|Executive Essentials|IntellicontactPro|zZounds|Roadloans