Yeah I've had success with PPC and AuctionAds, its just like doing Arbitrage but much much much easier to get a conversion.
WRONG,
You need more creativity, you can dynamically generate your AuctionAds keywords based upon a variable, you set the variable to whatever your using inside of your Adwords Campaign, Track where each click came from (The keyword that is) and insert it into your auction ads keywords.
So it doesn't matter if the searcher/buyer typed in big cars and clicked on your adwords ad then your auction ads ad would automatically be set to show big car ads, so on and so forth with each and every keyword.