[adwords.blogspot.com...]
Is there a way to know what is the minimum bid for a keyword before getting the ad alive ?
You can get a rough estimate from the Google Keyword Tool. You have to set the column view to Show All.
netmeg is quite correct, but I underline that this is a rough estimate. I make this point because the quality score you see for a keyword will be largely dependent on how effectively it is used in your account.
<< Pardon the pre-written (by me) information below - but I think it might prove to be useful for you. >>
Minimum bids are based on the quality and relevance of the keyword, its ad, and associated landing page - all as used in your particular account. This pricing model favors higher quality ads by requiring lower minimum CPC bids for them to enter the auction. Lower quality ads require higher minimum CPC bids.
Much more information on this subject, including tips on how to avoid high minimum bids, may be found in the AdWords Help Center. I've linked-to three of these page below as a good starting point:
* Quality-Based Minimum Bids
[adwords.google.com...]
* What is a 'Quality Score' and how is it calculated?
[adwords.google.com...]
On the page linked-to below, you'll find some general guidelines regarding the creation of landing pages that could help improve your landing page quality score:
* Landing Page and Site Quality Guidelines:
[adwords.google.com...]
AWA