Did I say there's anything wrong with that? I didn't make any conclusion ... it's up to everyone to decide
But I did asked the beginners not to try it, and think about it only they get more experience.
As for the example, I'm not encouraging newbies to do that ..... i'm just telling how some 'pro' affiliate markerters do it ................... and also to let others know how to differentiate the so called 'REVIEW' sites run by affiliate marketers behind the scene..... just an eye-opener.
Yes, I know the adwords price may not be always that high depending on other factors ....and also Google 'smart pricing' might kick in to reduce a bit of the cost for the advertiser.... but even if it gets a bit lower... it's still VERY high for most other ppl.