adwords bid price skyrocket when you try to promote affiliate links... Best way is to create a domain, put a page with your affiliate link on it, and target that domain root with adwords. You quality score is increased when you target a root domain, or subdomains, rather than a specific landing page.
PPC is quite nasty if you don't know how to deal with it properly, especially Adwords, Quality score is important to lower the CPC. Thanks for the pointer.
So it's best not to promote affiliate links using AdWords. Valuable knowledge. What a bummer for those without a domain or internet presence. Thanks for the tip. This will definitely save some money.